Shop Girls' Swimsuits for Every Age & Activity
Shopping for girls' swimsuits starts with four specs: age and size range, activity (recreational, swim team, or beach), sun protection rating, and fabric type. Filter by swimsuit style (one-piece, tankini, rash guard, sunsuit), size (2T through 16), UPF rating (50+ or 30-50), and Swim Solutions (chlorine resistant) to narrow options.
Sizing by Age
Toddler (2T through 6X) sizing fits ages two through six and typically offers snap closures, wider shoulder straps, and extra coverage for active play. Girls' (7 through 16) sizing fits ages seven through mid-teens with a range of cut styles without bust-cup construction. Junior sizing serves older teens moving toward adult fits. Each brand has its own size chart, so measuring chest, waist, and torso length gives the best match. Growing between sizes is common, so many parents size up for a longer usable season.
Shop by Style
One-piece swimsuits are the most popular choice for girls because they stay in place during active swimming and offer the most coverage. Scoopneck, high-neck, and square-neck cuts are standard, with back styles including racerback, cross-back, tie-back, and thin-strap options.
Tankinis pair a tank-length top with separate bottoms, giving the coverage of a one-piece with the convenience of a two-piece for bathroom breaks.
Rash guards and sunsuits add long-sleeve or short-sleeve coverage with UPF 50+ protection. Competition swimsuits use chlorine-resistant fabric and racerback cuts for swim team practice and meets.
Sun Protection (UPF 50+)
UPF 50+ fabric blocks 98% of UVA and UVB rays, the highest rating available. UPF 30-50 blocks 96% to 97%. For extended beach or pool time, a UPF 50+ rash guard or sunsuit reduces the need to reapply sunscreen on the chest, back, and shoulders. Long-sleeve rash guards extend protection to the arms. Browse girls' rash guards and sun protection and girls' sunsuits.
Swim Team and Training
For swim team, look for chlorine-resistant polyester blends, typically labeled as chlorine resistant or with fabric names ending in resistant or proof. These fabrics last several times longer than standard nylon-spandex in chlorinated pools, holding shape and color through daily practice. Racerback and cross-back cuts prevent strap slip during starts and turns. Girls' competition swimsuits are filtered separately. Many swim teams have a specific suit requirement, so check with the coach before buying.
Other Girls' Swimwear Categories
For younger kids and beach days, girls' board shorts pair with a rash guard or tankini top for extra coverage during paddle sports and beach play. Girls' float suits add buoyancy for early swimmers. Girls' swim diapers are required at most public pools for children not yet potty-trained. Prices across the girls' collection range from under $20 for basic styles to around $100 for technical competition suits.
Girls' Swimsuits FAQ
What size girls' swimsuit should I buy?
Girls' swimsuits are sized by age for younger kids (2T, 3T, 4, 5, 6, 6X) and by numeric size for bigger girls (7, 8, 10, 12, 14, 16). Sizes vary between brands, so check the size chart on each product page. Measuring chest, waist, and torso length and matching to the chart gives the best fit. Many parents size up for growing kids to get more wear out of the suit.
What's the best swimsuit for girls who swim on a team?
For swim team, choose a chlorine-resistant polyester one-piece with a racerback or cross-back cut. Chlorine-resistant fabric lasts several times longer than standard nylon-spandex in pool water, holding shape and color through daily practice. Racerback cuts stay in place during starts, turns, and flip-turns. Many teams have a specific suit requirement, so ask the coach before buying. Competition swimsuits are filtered separately in the Girls' Competition collection.
Do girls' swimsuits come with UPF sun protection?
Many girls' swimsuits and rash guards carry a UPF rating of 30-50 or 50+. UPF 50+ blocks 98% of UVA and UVB rays, the highest rating available. For extended pool or beach time, a UPF 50+ long-sleeve rash guard or full sunsuit extends sun protection across the torso and arms. Filter by UPF Rating to narrow to rated options.
How long does a girls' swimsuit last?
A chlorine-resistant polyester swimsuit can last one to two full seasons of regular pool use. Standard nylon-spandex suits last a few months of frequent pool use before the fabric starts to thin or fade. Rinsing in cool water after each use, avoiding the dryer, and laying flat to dry extend the life of any swimsuit. For growing kids, size is usually the limiting factor before fabric wears out.
One-piece or two-piece for my daughter?
One-piece swimsuits stay in place during active swimming and offer the most coverage, which is why most swim teams require them. Tankinis are a good middle-ground for recreational swimming: full torso coverage with the convenience of a two-piece for bathroom breaks. Two-piece styles work for pool lounging and beach days. The right choice depends on the activity and her own preference.