Best 6 Girls One Piece Swimwear in 2026

ADORABLE DESIGN - Features the sweetest details for stylish sun safety. One-piece design with cap sleeves offer sun coverage and comfort along with greater flexibility while your little girl grows. And, our signature ruffles are on every pair of bottoms.

BUILT-IN SUN PROTECTION - No more tears! Keep your little girl’s delicate skin safe in the sun with RuffleButts features built-in UPF 50+ so there’s more playing and less worrying about harsh UV rays. Perfect for the beach, lake or pool!

QUICK CHANGE SNAPS & ZIPPER - Diapers changes are a breeze with 3 nickel-free snaps at the bottom, while a convenient zipper at the neck/back makes getting this suit on/off a no-more-tears experience.

ADORABLE DESIGN : Ruffle detail, made of quick-drying, lightweight and soft fabric, skin-friendly and comfortable for baby to wear

SUN PROTECTION: The girl swimsuit's with UPF 50+, blocks out more than 98% of the sun's harmful UV radiation, effectively resist ultraviolet ray, protect your baby's skin

QUICK CHANGE SNAPS and ZIPPER : Diapers changes are a breeze with 3 nickel-free snaps at the bottom and a convenient zipper at the back makes getting this suit on / off a easy experience

ADORABLE DESIGN : Ruffle detail, made of quick-drying, lightweight and soft fabric, skin-friendly and comfortable for baby to wear

SUN PROTECTION: The girl swimsuit's with UPF 50+, blocks out more than 98% of the sun's harmful UV radiation, effectively resist ultraviolet ray, protect your baby's skin

QUICK CHANGE SNAPS and ZIPPER : Diapers changes are a breeze with 3 nickel-free snaps at the bottom and a convenient zipper at the back makes getting this suit on / off a easy experience

Trim, lightweight, and comfortable swim diaper encourages swimming—Baby will move freely during swim lessons without feeling weighed down. No bulky fabric and extra snaps. Our 2-in-1 baby girl swimsuit and reusable swim diaper is all you need for playtime at the pool or beach.

PATENTED, TRIPLE-LAYER DESIGN FOR SECURE PROTECTION—A wicking liner prevents diaper rash, an inner absorbent layer for protection outside the pool, and waterproof outer layer with the snug-fitting waist and legs offers secure protection from accidents.

ENSURE A SNUG FIT TO PREVENT ACCIDENTS—A snug fit without being too tight and frequent diaper checks are essential for any swim diaper to prevent pool accidents, see the size chart for more information.

Endless Fun In The Sun: At Tame the Sun, we know you want to keep your kids safe - so we’ve designed our girls long sleeve swimsuits to be the ultimate sun protection! With its high collar and long sleeves, these high-quality bathing suits for girls are made with lightweight, UPF 50+ fabric, that will protect your child against 98% of harmful UVB and UVA rays.

Perfect Fit For Years: Our long sleeve girls rash guard swimwear are made with durable, soft, and chlorine-resistant fabric, and will stretch comfortably to fit growing bodies. They have a long-lasting, full front and back lining for modesty even when wet. Plus, our girls modest swimwear has a zip guard and chunky zipper. Please refer to size chart below, we recommend sizing down if in doubt.

Adorable, Stylish Swimsuits: Your daughter will love the colorful, fun patterns on this sun-safe children’s swimsuit, and she will be a total standout on family trips to the beach or at the pool! This gorgeous bathing suit with sleeves is a timeless design featuring a modest cut appropriate for girls 3 to 12 years old, and the rear has three super cute ruffles for extra style!

Endless Fun In The Sun: At Tame the Sun, we know you want to keep your kids safe - so we’ve designed our girls long sleeve swimsuits to be the ultimate sun protection! With its high collar and long sleeves, these high-quality bathing suits for girls are made with lightweight, UPF 50+ fabric, that will protect your child against 98% of harmful UVB and UVA rays.

Perfect Fit For Years: Our long sleeve girls rash guard swimwear are made with durable, soft, and chlorine-resistant fabric, and will stretch comfortably to fit growing bodies. They have a long-lasting, full front and back lining for modesty even when wet. Plus, our girls modest swimwear has a zip guard and chunky zipper. Please refer to size chart below, we recommend sizing down if in doubt.

Adorable, Stylish Swimsuits: Your daughter will love the colorful, fun patterns on this sun-safe children’s swimsuit, and she will be a total standout on family trips to the beach or at the pool! This gorgeous bathing suit with sleeves is a timeless design featuring a modest cut appropriate for girls 3 to 12 years old, and the rear has three super cute ruffles for extra style!

»»»» PREMIUM FABRIC QUALITY «««« Made of high quality 80% polyester + 20% spandex, our baby girls one piece swimsuits' fabrics are durable and soft for flexible movements with its great elasticity and durability.

»»»» NO MORE SUNRAY WORRY «««« This baby girls long sleeve rash guard swim shirt offers full coverage and comfort along with its built-in sun protection by applying the UPF 50+ rated fabrics. Enjoy a playful and carefree vacation.

»»»» FANTASTIC TRENDY PRINTS «««« With the trendy hawaiian floral, animal, mermaids and unicorn prints and fade-resistant bright color, this baby girls one piece bathing suits will let your girl explore and shine in the crowd freely for much more fun.

START SUN SAFETY NOW– Protecting your little ones from the sun starts on day one. Wrapping your girl in something that is comfortable and sun protective is SwimZip’s #1 goal. Designed in the USA, our swimsuits are made of high-quality fabric that’s fade-resistant and durable while still feeling soft and comfortable.

BUILT-IN SUN PROTECTION- SwimZip's built-in sun protection blocks 98% of all UVA and UVB cancer causing rays. No more sunburns! Keep your child's delicate skin safe in the sun with SwimZip's built-in UPF 50+ sun protection so there’s more time for enjoying the beach, lake or pool and less time worrying about harsh UV rays and reapplying sunscreen.

BACK ZIPPER MAKES PUTTING ON AND TAKING OFF A ZIP – Our surf suit comes with a long zipper in the back to make getting into and out of the suit a breeze. There is also an extra long zipper tag to make it easy for your girl to zip herself up.

Endless Fun In The Sun: At Tame the Sun, we know you want to keep your kids safe - so we’ve designed our girls long sleeve swimsuits to be the ultimate sun protection! With its high collar and long sleeves, these high-quality bathing suits for girls are made with lightweight, UPF 50+ fabric, that will protect your child against 98% of harmful UVB and UVA rays.

Perfect Fit For Years: Our long sleeve girls rash guard swimwear are made with durable, soft, and chlorine-resistant fabric, and will stretch comfortably to fit growing bodies. They have a long-lasting, full front and back lining for modesty even when wet. Plus, our girl’s modest swimwear has a zip guard and chunky zipper. Please refer to size chart below, we recommend sizing down if in doubt.

Adorable, Stylish Swimsuits: Your daughter will love the colorful, fun patterns on this sun-safe children’s swimsuit, and she will be a total standout on family trips to the beach or at the pool! This gorgeous, timeless design features a modest cut appropriate for girls 6 to 14 years old, and available in zip front and zip back designs.

Endless Fun In The Sun: At Tame the Sun, we know you want to keep your kids safe - so we’ve designed our girls long sleeve swimsuits to be the ultimate sun protection! With its high collar and long sleeves, these high-quality bathing suits for girls are made with lightweight, UPF 50+ fabric, that will protect your child against 98% of harmful UVB and UVA rays.

Perfect Fit For Years: Our long sleeve girls rash guard swimwear are made with durable, soft, and chlorine-resistant fabric, and will stretch comfortably to fit growing bodies. They have a long-lasting, full front and back lining for modesty even when wet. Plus, our girl’s modest swimwear has a zip guard and chunky zipper. Please refer to size chart below, we recommend sizing down if in doubt.

Adorable, Stylish Swimsuits: Your daughter will love the colorful, fun patterns on this sun-safe children’s swimsuit, and she will be a total standout on family trips to the beach or at the pool! This gorgeous, timeless design features a modest cut appropriate for girls 6 to 14 years old, and available in zip front and zip back designs.

START SUN SAFETY NOW– Protecting your little ones from the sun starts on day one. Wrapping your girl in something that is comfortable and sun protective is SwimZip’s #1 goal. Designed in the USA, our swimsuits are made of high-quality fabric that’s fade-resistant and durable while still feeling soft and comfortable.

BUILT-IN SUN PROTECTION- SwimZip's built-in sun protection blocks 98% of all UVA and UVB cancer causing rays. No more sunburns! Keep your child's delicate skin safe in the sun with SwimZip's built-in UPF 50+ sun protection so there’s more time for enjoying the beach, lake or pool and less time worrying about harsh UV rays and reapplying sunscreen.

BACK ZIPPER MAKES PUTTING ON AND TAKING OFF A ZIP – Our surf suit comes with a long zipper in the back to make getting into and out of the suit a breeze. There is also an extra long zipper tag to make it easy for your girl to zip herself up.

She will sparkle and shine in this unicorn one piece rashguard swimsuit!

Sky blue nylon spandex one-piece rash guard features gold piped neckline, layered gold mesh tutu circles the waist

Pink nylon spandex unicorn applique with dimensional pink and blue knotted mane, metallic silver and gold linen and embroidery detail

Chemical-free UPF 50+ sun protection

Unlined body

Chlorine and saltwater resistant

[UV PROTECTION]: Girls’ one-piece swimsuits for baby and toddlers with 50+ UPF all day sun protection, wet or dry, blocking sun’s harmful UV rays. Long sleeves offer rash guard coverage.

[NO HARMFUL CHEMICALS]: Keep your little girl’s delicate skin safe with built in UV sun protection. With no chemicals added, the sun protection comes from the weave of the swim-suit fabric and does not wash off.

[COMFORTABLE & QUICK DRY]: High quality bathing suits for girls made with soft, quick-dry fabric with low water absorption. Spandex blend and raglan cut offer easy movement at the beach or in the water. Non-irritating smooth flat lock seams for comfort.

[UV PROTECTION]: Girls’ one-piece swimsuits for baby and toddlers with 50+ UPF all day sun protection, wet or dry, blocking sun’s harmful UV rays. Long sleeves offer rash guard coverage.

[NO HARMFUL CHEMICALS]: Keep your little girl’s delicate skin safe with built in UV sun protection. With no chemicals added, the sun protection comes from the weave of the swim-suit fabric and does not wash off.

[COMFORTABLE & QUICK DRY]: High quality bathing suits for girls made with soft, quick-dry fabric with low water absorption. Spandex blend and raglan cut offer easy movement at the beach or in the water. Non-irritating smooth flat lock seams for comfort.

❖❖MODERN STYLE & ULTRA LIGHTWEIGHT❖❖---These modern stylish baby and toddler girls rash guard are designed with vibrant prints and made with ultra light fabrics, only to bring your girls breathable and restraint-free feel, snug fitting and skin-friendly enough at any time.

❖❖QUICK DRY & SOFT MESH LINER INSIDE❖❖---Our premium baby girls one piece swimsuits all get the quick dry function, only takes short time to dry, keep your kids rash guard dry and flexible all the time; Also, the soft smooth mesh liner inside prevents legs from chafing and rubbing and provides comfort at the same time.

❖❖CONVENIENT BUTTON SNAPS & DRESS TRIMS❖❖---Convenient button snaps can help it easy to wear and undress and bring your babies maximum comfort. Rear zipper is for easy dress when they are on the beach side and ready to dance in the sunlight. Dress trims make your angels outstanding enough on the beach or pool side.

One piece swimsuit

Scoop neckline

Ruffled cap sleeve detail

Chemical-free UPF 50+ sun protection

Zipper closure on back

Snap closure at inseam

Chemical-free UPF 50+ sun protection

Zipper closure on back

Snap closure at inseam