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The Best Junior Girls Swimwear: Our Top Picks

by Nicole Villamor on Mar 13, 2026
An assortment of junior girls swimwear, including one-pieces, bikinis, and rashguards.

A swimsuit for a young swimmer has to do two jobs at once. It needs to be tough enough to handle countless hours of flip turns and drills in a chlorinated pool, but it also needs to be stylish enough for a fun day at the beach with friends. Finding that perfect balance is key. The world of junior girls swimwear offers options that cater to both the serious athlete and the casual swimmer. You don’t have to choose between performance and personality. In this guide, we’ll explore the best materials for durability, the most popular styles for different activities, and the top brands that deliver on both quality and design, ensuring you find a suit that works as hard as she does.

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Key Takeaways

  • Measure for a perfect fit: Since junior sizing isn't standard, use a measuring tape for her chest, waist, hips, and torso. Always check the brand's specific size chart to find a suit that offers secure comfort without slipping or restricting movement.
  • Select fabric for function and longevity: For regular pool swimmers, a chlorine-resistant polyester suit will last longer and keep its color. For outdoor water activities, look for swimwear with a UPF 50+ rating to provide reliable sun protection.
  • Choose a style that suits her activity: A classic one-piece offers the best security for competitive swimming and active play, while two-piece styles like bikinis and tankinis provide more sizing flexibility and are great for casual beach or pool days.

What is Junior Girls' Swimwear?

If you're shopping for a girl who has outgrown the kids' section but isn't quite ready for adult sizes, you've landed in the right place. Junior girls' swimwear is designed specifically for this age group, typically ranging from 6 to 16. It’s all about finding that perfect balance between fun, age-appropriate styles and the high-performance features an active girl needs, whether she’s training for a swim meet or just enjoying a day at the beach. This category offers a huge variety of cuts and designs, from sleek one-pieces built for speed to playful tankinis and bikinis.

Unlike swimwear for younger children, junior styles often reflect current fashion trends with vibrant colors and bold prints, giving girls a chance to express their personality. At the same time, these suits are constructed to support a growing and changing body, providing comfort and coverage where it counts. You’ll find that the best girls' swimwear is made to move, offering a secure fit that stays put through every dive, flip turn, and cannonball.

The magic is in the materials. Most quality junior swimsuits are crafted from a blend of nylon, polyester, and spandex. This combination is a winner because it provides the perfect amount of stretch for a comfortable fit while being durable enough to stand up to chlorine, salt, and sun. When you're choosing the right material, look for fabrics that are soft, quick-drying, and offer UV protection. This ensures her suit is not only comfortable for all-day wear but also built to last through the entire swim season and beyond.

Popular Styles to Consider

Finding the right swimsuit starts with knowing the options. Here are the most popular styles for junior girls and what makes each one a great choice for different activities and preferences.

One-Piece Swimsuits

The one-piece is a timeless classic for a reason. It offers fantastic coverage and a secure fit, making it a go-to for everything from competitive swim practice to cannonballs at the pool party. You never have to worry about a top or bottom shifting during a flip turn. Modern one-pieces come in a huge variety of styles, with different back designs like racerbacks for performance or fun cut-outs for a touch of fashion. It’s a reliable and comfortable choice that works for every kind of water activity, ensuring she can focus on having fun.

Bikinis and Two-Piece Sets

For girls who love to express their personal style, bikinis and two-piece sets are a perfect match. The biggest advantage is the ability to mix and match tops and bottoms, creating a unique look. This is also great for finding the perfect fit if she needs different sizes for her top and bottom. Two-piece suits offer great freedom of movement and are ideal for lounging by the pool or casual beach days. You can find everything from sporty cuts to trendy designs with ruffles and bright patterns in our collection of girls swimwear.

Tankinis

If you’re looking for a happy medium between a one-piece and a bikini, the tankini is your answer. This style pairs a tank-style top with a bikini bottom, giving you the coverage of a one-piece with the convenience of a two-piece. Tankinis make bathroom breaks much simpler and offer more versatility in sizing. Many sets allow you to choose different sizes for the top and bottom, ensuring a comfortable and secure fit. They’re a fantastic, flexible option that provides confidence for a full day of swimming and playing.

Rashguards and Swim Sets

Sun protection is a top priority for long days in the water. That’s where rashguards come in. These tops, available in long-sleeve and short-sleeve styles, are often made with UPF fabric to shield skin from harmful UV rays. They also help prevent chafing from surfboards or boogie boards. You can buy them separately or as part of a set with matching bottoms. A quality rashguard is an essential piece of gear for any junior swimmer who spends hours enjoying the sun, sand, and surf.

How to Choose the Right Size

Finding a swimsuit that fits just right is the secret to a great day in the water. A suit that’s too tight can be restrictive, while one that’s too loose can create drag or slip during a dive. Because junior sizing can vary so much between brands, it’s always best to rely on specific measurements rather than guessing her usual size. Taking a few minutes to measure will help you find a comfortable, secure suit that she’ll feel confident wearing for practice, competition, or fun.

How to Read Junior Sizing Charts

The most important tool at your disposal is the brand’s sizing chart. Junior swimwear sizes don’t always line up with standard clothing sizes, so it’s best to set those numbers aside and start fresh. Each product page should have a specific chart that lists measurements for the chest, waist, hips, and torso. The torso measurement, or "torso loop," is especially important for finding a one-piece that won’t ride up or sag. Always check the chart for the specific girls' swimwear you're considering, as fits can even vary within the same brand.

The Perks of Mix-and-Match Sizing

It’s completely normal for girls to be a different size on top than they are on the bottom. This is where mix-and-match sizing is a game-changer. Buying bikini or tankini tops and bottoms separately allows you to create a custom-fit two-piece that feels comfortable and secure. This flexibility is perfect for growing bodies, ensuring that both pieces fit perfectly without being too tight or too loose in the wrong places. It also gives her the freedom to combine styles and colors to create a look that’s uniquely hers.

How to Measure for a Perfect Fit

To get the most accurate measurements, all you need is a soft measuring tape. Have her stand up straight in a relaxed position. For the chest, measure around the fullest part of her bust. Find her natural waist by having her bend to one side; measure the crease. For the hips, measure around the widest point. Finally, for the crucial torso loop, place the tape on top of her shoulder, run it down her front, through her legs, and back up to the same shoulder. These numbers will help you find the perfect suit from our collection of new products.

What to Look for in a Quality Swimsuit

A great swimsuit is more than just a cute pattern. The right suit can make a huge difference in how comfortable and confident a girl feels in the water, whether she’s training for a meet or just splashing around with friends. When you’re shopping, it’s easy to get overwhelmed by all the options, but focusing on a few key indicators of quality will help you find a suit that not only looks great but also performs well and lasts through the season.

Think of a quality swimsuit as an investment. A well-made suit will hold its shape, retain its color, and stand up to sun, chlorine, and saltwater. It will also provide the comfort and support she needs to move freely without any chafing, rubbing, or wardrobe malfunctions. By paying attention to the fabric, durability, sun protection, and overall construction, you can choose a piece that she’ll love to wear and that you won’t have to replace halfway through summer.

Choose the Right Fabric and Materials

The feel of a swimsuit is the first sign of its quality. Look for fabrics that are soft, stretchy, and smooth to the touch. Most high-quality girls' swimwear is made from a blend of nylon and spandex (also known as Lycra) or polyester and spandex. These combinations offer the perfect amount of four-way stretch, allowing the suit to move with her body without feeling restrictive. A good fabric will also be quick-drying, which is a huge plus for preventing post-swim chills and making it easy to pack up after a day at the pool or beach. A suit that feels good against the skin is one she’ll be excited to put on every time.

Prioritize Durability and Chlorine Resistance

If she spends a lot of time in a chlorinated pool, durability is non-negotiable. Chlorine is harsh on fabrics and can cause colors to fade and materials to break down quickly. This is where polyester-based fabrics really shine. Polyester offers excellent chlorine resistance, helping the suit maintain its vibrant color and snug fit swim after swim. While nylon blends are incredibly soft, a suit made with a high percentage of polyester is the top choice for competitive swim and frequent pool-goers. Investing in a chlorine-resistant suit means you won’t be shopping for a replacement mid-season due to a saggy, faded-out suit.

Don't Forget UV Protection

Protecting her skin from the sun is just as important as finding a comfortable fit. Many modern swim fabrics come with a built-in Ultraviolet Protection Factor (UPF) rating, which tells you how much of the sun’s harmful UV radiation the material blocks. Always look for a suit with a UPF rating of 50+, the highest rating available for textiles. This means the fabric blocks over 98% of UVA and UVB rays. For maximum coverage, consider pairing a swimsuit with one of the latest rashguards, which protect the shoulders, back, and chest, areas that are especially prone to sunburn.

Check for Quality Construction and Comfort

A well-constructed swimsuit is a comfortable swimsuit. Take a closer look at the details, like the stitching and the lining. Quality suits feature flatlock seams, which lie flat against the skin to prevent chafing and irritation during movement. The stitching should be tight and secure, with no loose threads. A full lining, especially in the front of the suit, provides better coverage and support while also helping the suit last longer. Pay attention to the straps, too. They should be secure and comfortable, staying in place without digging into her shoulders. These small construction details add up to a suit that feels great from the moment she puts it on.

Top Brands to Check Out

When you're shopping for junior girls' swimwear, certain brands consistently deliver on quality, comfort, and style. These names are trusted by swimmers and parents alike because they understand what young athletes need to feel confident and perform their best in the water. From practice suits built to withstand daily chlorine exposure to race-day tech suits, these brands offer something for every level of swimmer. Investing in a suit from a reputable brand means you're getting a product designed for durability and a great fit, so she can focus on her strokes, not on an uncomfortable swimsuit. They use high-performance fabrics that resist fading and stretching, and they design their suits with details like secure straps and comfortable seams that prevent chafing during long practices. We'll walk through some of the top names in the industry, so you can find the perfect match for her needs, whether she's just starting lessons or aiming for the podium. These brands have spent years perfecting their craft, listening to feedback from athletes and coaches to create swimwear that truly works. You'll notice the difference in how the suit holds its shape and color, even after a full season of use.

Swim2000's Premium Girls' Collection

We've curated a collection that strikes the perfect balance between performance and fun. Our selection of girls' swimwear is designed with the young swimmer in mind, featuring durable fabrics that hold their shape and color after countless hours in the pool. We focus on comfortable straps, secure fits, and designs that let her personality shine through. Whether she needs a reliable suit for swim team practice or a stylish set for a day at the beach, you’ll find high-quality options that are built to last. We believe every young swimmer deserves a suit that makes her feel powerful and ready to take on the water.

Arena Performance Swimwear

If your daughter is serious about swimming, Arena is a brand you need to know. Renowned in the competitive swim world, Arena is known for its technical innovation and hydrodynamic designs that help swimmers achieve their personal best. Their suits are crafted from advanced, chlorine-resistant materials that offer excellent compression and flexibility. While they are a top choice for elite athletes, Arena also offers fantastic training suits that bring that same level of quality to daily practice. An Arena suit is an investment in her performance, providing the support and technology she needs to excel in the pool.

Speedo's Junior Line

Speedo is a classic for a reason. As one of the most recognized names in swimming, the brand has a long history of producing reliable, high-quality swimwear for all ages. Speedo's junior line offers a huge variety of styles, from sleek one-pieces for training to fun, colorful bikinis for recreation. They are known for their excellent fit and durable Endurance+ fabric, which is specially designed to resist fading and stretching. With Speedo, you get a suit that’s comfortable, functional, and built to handle everything from swim lessons to competitive meets, making it a go-to choice for parents everywhere.

TYR Girls' Swimwear

TYR (pronounced "tier") is another powerhouse in the swimming community, celebrated for its vibrant designs and performance-driven construction. The brand excels at creating suits that are both tough and stylish, appealing to young swimmers who want to stand out on the deck. TYR's Durafast fabric is a standout feature, offering impressive chlorine resistance and colorfastness for hundreds of hours of use. Their suits provide a secure, comfortable fit that allows for a full range of motion, making them perfect for both intense training sessions and casual swims. TYR proves that you don't have to sacrifice personality for performance.

Nike and Adidas Junior Options

Major athletic brands like Nike and Adidas bring their expertise in sportswear to the water, offering junior swimwear that is both stylish and functional. These brands are known for their modern, athletic cuts and innovative materials that provide a comfortable, streamlined fit. Their collections often feature bold logos and trendy designs that appeal to girls who are active in multiple sports. You can expect the same level of quality and performance from their swimwear as you do from their other athletic gear. Check out the latest swimwear new arrivals to see their fresh and sporty options for the pool.

What Are the Latest Trends?

Swimwear for junior girls is more exciting than ever. The latest styles are all about combining fun, function, and a little bit of personality. It’s not just about what looks good on the rack; it’s about finding pieces that feel great to wear, stand up to a full day of swimming, and reflect her unique style. From eco-conscious fabrics to designs that offer more bang for your buck, the current trends are smart, stylish, and built for making memories in the water. Let's look at what's making a splash right now.

Eco-Friendly and Sustainable Fabrics

Sustainability has officially arrived in the swimwear world, and it’s a trend we can all get behind. More brands are using innovative, eco-friendly materials to create high-quality suits that are kinder to the planet. One of the most popular options is recycled polyester, which is often made from post-consumer plastic waste like water bottles. These fabrics are soft, durable, and perform just as well as traditional materials, offering excellent stretch and chlorine resistance. Choosing a suit made from sustainable materials means you’re getting a great product while also making a more environmentally conscious choice. You can find these options by checking the material details on our new products page.

Reversible Suits and Mix-and-Match Pieces

Versatility is a huge plus, and that’s why reversible suits and mix-and-match separates are so popular. A reversible swimsuit is like getting two looks in one, which is perfect for long beach days or packing light for vacation. It gives her the power to switch up her style in an instant. Similarly, mix-and-match pieces allow for total customization. She can pair a sporty rashguard with a fun bikini bottom or find the perfect fit by choosing different sizes for her top and bottom. This approach lets her build a swim wardrobe that truly fits her body and personality. Explore our collection of girls' swimwear to find pieces she can make her own.

Bold Prints and Retro Vibes

Gone are the days of boring, basic swimwear. Today’s trends are all about making a statement with vibrant colors and eye-catching designs. You’ll see everything from tropical florals and whimsical animal prints to geometric patterns that pop. Alongside these bold prints, retro-inspired styles are making a major comeback. Think fun color-blocking, classic stripes, and silhouettes that give a nod to vintage fashion without sacrificing modern performance. These playful designs are perfect for expressing individuality and bringing an extra dose of fun to the pool or beach. Check out the latest swimwear new arrivals to see these fun and fashionable styles for yourself.

Answering Common Questions from Parents

Choosing the right swimsuit for your daughter involves more than just picking a fun color. As a parent, you're likely thinking about fit, function, and what feels appropriate for her age and activity. It's about finding that sweet spot where she feels great and you feel good about her comfort and safety. Let's walk through some of the most common questions we hear from parents to help you make a confident choice.

Balancing Style, Coverage, and Comfort

The one-piece versus two-piece debate is a common one. Some parents feel bikinis are too mature, while others prioritize the convenience of a two-piece for quick changes. The best choice is one that makes your daughter feel comfortable and confident in the water. When you're browsing different girls swimwear, focus on materials that are soft, durable, and safe for her skin. Look for fabrics with good stretch and recovery so the suit moves with her, not against her. A great swimsuit should support her activity without causing chafing, letting her focus on having fun.

Performance vs. Fashion: What's the Difference?

Is she training with a swim team or just splashing at the beach? The answer will guide your choice. High-quality competitive swim gear is built for durability in chlorinated pools, often using polyester blends that resist fading and stretching. These suits have a snug, athletic fit designed to reduce drag and stay put during dives and turns. Fashion suits, on the other hand, prioritize trendy prints and cuts. While perfect for vacation, their materials may not hold up to the rigors of daily training in a chemically treated pool.

Key Safety and Sun Protection Tips

A swimsuit's fit is a key safety feature. A suit that's too loose can create drag in the water, making it more difficult for a child to swim efficiently. It can also snag on pool equipment like ladders or lane lines. Beyond fit, sun protection is crucial. Look for swimwear made with UPF 50+ rated fabric to block harmful UV rays. For long days outdoors, consider a rashguard for extra coverage on her shoulders, back, and arms. This simple addition provides reliable sun protection without needing to reapply sunscreen constantly.

What to Expect to Pay (And How to Save)

Finding the right swimsuit often comes down to balancing your budget with your daughter's needs. The price of a swimsuit usually reflects the quality of the fabric, its durability against chlorine and sun, and the performance features it offers. Whether she’s just splashing around or training for her next big meet, there’s a perfect suit at every price point. Let’s break down what you can expect to find.

Entry-Level Swimwear ($20-$35)

In this price range, you’ll find plenty of great options perfect for casual summer fun, a week at camp, or for a swimmer who is growing so fast you know you’ll be buying another size soon. These suits are stylish and comfortable for splashing at the pool or building sandcastles at the beach. While they may not have the high-tech fabrics or extreme chlorine resistance of pricier models, they are a fantastic and affordable way to get your child in the water. They get the job done for light, recreational use and ensure she has a suit she loves without a big investment.

Mid-Range Quality ($35-$50)

This is often the sweet spot for many parents, offering a great mix of durability, style, and value. Suits in this range are built to handle more frequent use, making them ideal for weekly swim lessons or for the kid who practically lives at the pool all summer. You’ll notice a step up in fabric quality, with better shape retention and resistance to fading from chlorine and sun. These swimsuits are reliable workhorses that provide comfort and performance without venturing into the premium price category. You can find a wide variety of girls' swimwear in this range, from sturdy one-pieces to fun two-piece sets.

Premium Performance Swimwear ($50+)

If your daughter is on a swim team or trains regularly, investing in a premium performance suit is a smart move. These swimsuits, priced at $50 and up, are engineered for speed and endurance. They feature advanced, chlorine-proof fabrics that offer compression to support muscles and a hydrodynamic fit to reduce drag in the water. Think of it as essential equipment, just like a good pair of goggles. A high-quality competitive swim suit is built to withstand the rigors of daily practice, holding its shape and color far longer than a standard suit. It’s an investment in her comfort and confidence in the pool.

How to Find Sales and Clearance Deals

Everyone loves a good deal, and you don’t have to pay full price to get a fantastic swimsuit. One of the best strategies is to shop during the off-season, like at the end of summer, when retailers are clearing out inventory. It’s also a great idea to sign up for email newsletters from your favorite swim shops to get alerts about upcoming sales and exclusive discounts. Don’t forget to check the sale section directly. We’re always adding great suits to our Clearance Corner, where you can find top-quality swimwear from previous seasons at a fraction of the original price.

Where to Shop for Junior Girls' Swimwear Online

Finding the perfect swimsuit online is all about knowing where to look. With so many options available, it helps to narrow your search to retailers that specialize in high-quality, durable swimwear designed for young swimmers. This ensures you’re getting a suit that not only looks great but also performs well in the water and lasts through the season.

Swim2000's Specialized Selection

When you're looking for the perfect suit, you want a place that gets it. A specialized shop like Swim2000 is my go-to because they focus entirely on swimwear and gear. This means you get a curated collection designed for swimmers, not just a few seasonal options tucked away in a large department store. They offer a fantastic range of girls' swimwear, from sleek one-pieces for swim practice to fun, comfortable two-pieces for a day at the beach. Because they cater to young athletes, you can trust that the styles are built for movement, comfort, and durability, giving you confidence in every purchase.

Why Shop at a Swim-Focused Store?

You might be tempted to grab a swimsuit from a big-box retailer, but there’s a real advantage to choosing a swim-focused store. These shops understand the demands of the water. The swimwear they carry is made with performance fabrics designed for both function and comfort. Think about features like chlorine resistance, which prevents the fabric from breaking down after a few trips to the pool, and built-in UV protection for long days in the sun. A specialty store offers gear specifically for competitive swim and other water sports, ensuring the suit you buy will hold its shape, color, and fit, no matter how active she is.

How to Use Reviews and Size Guides

Shopping for swimwear online gets a lot easier when you use the tools available. Before you add anything to your cart, always open the size guide. Sizing can vary quite a bit between brands, so measuring her and comparing it to the chart is the best way to ensure a great fit. A suit that fits properly won't ride up or cause chafing, which is key for comfort. Next, take a minute to read customer reviews. Other parents often leave helpful feedback about whether a suit runs true to size, how the fabric feels, and how it holds up over time. This real-world insight is invaluable for making a choice you’ll both be happy with.

How to Make Her Swimsuit Last: Simple Care Tips

You’ve found the perfect swimsuit, and she loves it. Now, how do you keep it looking new all season long? A little care goes a long way in extending the life of her swimwear, protecting the fabric’s color and stretch. It all starts with what you do right after you leave the pool or beach.

The biggest enemies of swimsuit fabric are chlorine, salt, and sunscreen. Make it a habit to rinse her suit in cool, fresh water as soon as she’s done swimming. This simple step washes away most of the damaging chemicals before they can set in. When it’s time for a proper wash, skip the washing machine. Instead, hand wash the suit in the sink with a mild soap designed for delicates. Harsh detergents can strip the color and break down the sensitive fibers.

How you dry the suit is just as important. Never wring it out, as that can stretch and damage the elastic. Gently squeeze the excess water out, then lay it flat on a towel or hang it up to air dry. Be sure to keep it out of direct sunlight, which can cause fading. And definitely avoid the dryer; the high heat is a surefire way to ruin the suit’s shape and fit. A great suit deserves great care, and our collection of girls' swimwear is built to last when treated right.

A few extra tips can make a big difference. Teach her to avoid sitting directly on rough surfaces like concrete pool decks or wooden benches, which can snag and pill the fabric. Laying a towel down first is an easy fix. If she’s a competitive swimmer or in the water almost every day, consider having two or three suits to rotate. This gives the elastic in each suit time to rest and recover its shape between wears. You can often find a great backup suit in our Clearance Corner to make rotating more affordable.

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Frequently Asked Questions

My daughter is between sizes on the chart. Should I size up or down? This is a common question, and the answer depends on the suit's purpose. For casual wear or if she's in the middle of a growth spurt, sizing up slightly can provide more comfort and a longer lifespan. However, for competitive swimming, a snug fit is essential to reduce drag. If you're choosing a two-piece, take advantage of mix-and-match options to get the perfect size for both her top and bottom.

What's the best type of swimsuit for swim team practice? For regular training, a one-piece swimsuit is almost always the best choice. Look for one made from a durable, chlorine-resistant fabric like polyester, which will hold its shape and color despite daily exposure to pool chemicals. Styles with secure straps, such as a racerback or cross-back design, will stay in place during dives and flip turns, allowing her to focus on her performance.

How can I tell if a swimsuit fits properly? A well-fitting suit should feel like a second skin, comfortable and secure without being restrictive. Check to see that the fabric lies flat against her body with no sagging or gaping, especially around the neckline and leg openings. The straps should stay put without digging into her shoulders, and she should be able to move her arms and legs freely without any chafing.

Is a UPF 50+ rating really that important? Absolutely. Think of a swimsuit with a UPF 50+ rating as a reliable, all-over layer of sunscreen that won't wash off in the water. This rating means the fabric blocks over 98% of the sun's harmful UVA and UVB rays, which is crucial for protecting her skin during long hours spent outdoors. It's one of the most effective ways to prevent sunburn on the areas the suit covers.

Why do some swimsuits fade or stretch out so quickly? The primary cause is usually chlorine, which is very harsh on delicate fabrics like spandex. If a suit isn't designed for the pool, it can break down, lose its shape, and fade after just a few swims. To avoid this, choose suits made with chlorine-resistant materials. Also, remember to rinse her suit in cool, fresh water immediately after she gets out of the pool to wash away the chemicals before they can do lasting damage.

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