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Whether it's for summertime or swimming lessons, your girls need the right gear for when they dive into the water. Check out thredUP's selection of girls' swimwear to discover items from top brands at up to 90% off estimated retail.
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![OshKosh B'gosh One Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/610443742/complimentary.jpg)
![OshKosh B'gosh One Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/610443614/complimentary.jpg)
OshKosh B'gosh
One Piece Swimsuit
Size 9 mo
$16.99 $9.34 45% off with code GOBIG
45% off estimated retail![Ocean Drive Clothing Co. Rash Guard (view 2)](https://cf-assets-thredup.thredup.com/assets/610320459/complimentary.jpg)
![Ocean Drive Clothing Co. Rash Guard (view 1)](https://cf-assets-thredup.thredup.com/assets/610320395/complimentary.jpg)
Ocean Drive Clothing Co.
Rash Guard
Size 5T
$17.99 $9.89 45% off with code GOBIG
40% off estimated retail![Assorted Brands One Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/611034524/complimentary.jpg)
![Assorted Brands One Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/611034419/complimentary.jpg)
Assorted Brands
One Piece Swimsuit
Size X-Large tots
$11.99 $6.59 45% off with code GOBIG
68% off estimated retail![Hanna Andersson One Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/610304373/complimentary.jpg)
![Hanna Andersson One Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/610304291/complimentary.jpg)
Hanna Andersson
One Piece Swimsuit
Size 8
$30.99 $17.04 45% off with code GOBIG
41% off estimated retail![Island Blue Swimsuit Cover Up (view 2)](https://cf-assets-thredup.thredup.com/assets/607961003/complimentary.jpg)
![Island Blue Swimsuit Cover Up (view 1)](https://cf-assets-thredup.thredup.com/assets/607960931/complimentary.jpg)
Island Blue
Swimsuit Cover Up
Size Small youth
$11.99 $6.59 45% off with code GOBIG
25% off estimated retail![Assorted Brands One Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/609768248/complimentary.jpg)
![Assorted Brands One Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/609768194/complimentary.jpg)
Assorted Brands
One Piece Swimsuit
Size 2T
$12.99 $7.14 45% off with code GOBIG
54% off estimated retail![Gap Kids One Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/609999968/complimentary.jpg)
![Gap Kids One Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/609999948/complimentary.jpg)
Gap Kids
One Piece Swimsuit
Size Medium kids
$24.99 $13.74 45% off with code GOBIG
45% off estimated retail![Cat & Jack Two Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/609147770/complimentary.jpg)
![Cat & Jack Two Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/609147708/complimentary.jpg)
Cat & Jack
Two Piece Swimsuit
Size Large youth
$8.99 $4.94 45% off with code GOBIG
47% off estimated retail![Kate Spade New York Rash Guard (view 2)](https://cf-assets-thredup.thredup.com/assets/609005106/complimentary.jpg)
![Kate Spade New York Rash Guard (view 1)](https://cf-assets-thredup.thredup.com/assets/609004992/complimentary.jpg)
Kate Spade New York
Rash Guard
Size 24 mo
$18.99 $10.44 45% off with code GOBIG
56% off estimated retail![Hanna Andersson One Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/608987820/complimentary.jpg)
![Hanna Andersson One Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/608987738/complimentary.jpg)
Hanna Andersson
One Piece Swimsuit
Size 4
$25.99 $14.29 45% off with code GOBIG
36% off estimated retail![Assorted Brands One Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/609559670/complimentary.jpg)
![Assorted Brands One Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/609559648/complimentary.jpg)
Assorted Brands
One Piece Swimsuit
Size 120 cm
$17.99 $9.89 45% off with code GOBIG
54% off estimated retail![OshKosh B'gosh One Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/609105900/complimentary.jpg)
![OshKosh B'gosh One Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/609105858/complimentary.jpg)
OshKosh B'gosh
One Piece Swimsuit
Size 6-9 mo
$14.99 $8.24 45% off with code GOBIG
37% off estimated retail![Lilly Pulitzer Two Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/604070480/complimentary.jpg)
![Lilly Pulitzer Two Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/604070443/complimentary.jpg)
Lilly Pulitzer
Two Piece Swimsuit
Size 10
$21.99 $12.09 45% off with code GOBIG
55% off estimated retail![Unbranded Two Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/607707409/complimentary.jpg)
![Unbranded Two Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/607707335/complimentary.jpg)
Unbranded
Two Piece Swimsuit
Size X-Large kids
$11.99 $6.59 45% off with code GOBIG
63% off estimated retail![Kate Quinn Organics One Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/606938890/complimentary.jpg)
![Kate Quinn Organics One Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/606938805/complimentary.jpg)
Kate Quinn Organics
One Piece Swimsuit
Size 3T
$10.99 $6.04 45% off with code GOBIG
59% off estimated retail![The Beaufort Bonnet Company One Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/604496918/complimentary.jpg)
![The Beaufort Bonnet Company One Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/604496893/complimentary.jpg)
The Beaufort Bonnet Company
One Piece Swimsuit
Size 10
$33.99 $18.69 45% off with code GOBIG
58% off estimated retail![Cat & Jack One Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/604912179/complimentary.jpg)
![Cat & Jack One Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/604912228/complimentary.jpg)
Cat & Jack
One Piece Swimsuit
Size Large youth
$9.99 $5.49 45% off with code GOBIG
41% off estimated retail![Jessica Simpson One Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/603437433/complimentary.jpg)
![Jessica Simpson One Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/603437472/complimentary.jpg)
Jessica Simpson
One Piece Swimsuit
Size 0-3 mo
$12.99 $7.14 45% off with code GOBIG
25% off estimated retail![Sporti One Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/599699345/complimentary.jpg)
![Sporti One Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/599699343/complimentary.jpg)
Sporti
One Piece Swimsuit
Size X-Small youth
$11.99 $6.59 45% off with code GOBIG
25% off estimated retail![Stella McCartney One Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/599984732/complimentary.jpg)
![Stella McCartney One Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/599984685/complimentary.jpg)
Stella McCartney
One Piece Swimsuit
Size 24 mo
$39.99 $21.99 45% off with code GOBIG
53% off estimated retail![Crew & Lu One Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/598974514/complimentary.jpg)
![Crew & Lu One Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/598974474/complimentary.jpg)
Crew & Lu
One Piece Swimsuit
Size 12-18 mo
$16.99 $9.34 45% off with code GOBIG
69% off estimated retail![Capezio One Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/596055595/complimentary.jpg)
![Capezio One Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/596055517/complimentary.jpg)
Capezio
One Piece Swimsuit
Size Small youth
$12.99 $7.14 45% off with code GOBIG
48% off estimated retail![Andy & Evan One Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/594012824/complimentary.jpg)
![Andy & Evan One Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/594012783/complimentary.jpg)
Andy & Evan
One Piece Swimsuit
Size 3-6 mo
$14.99 $8.24 45% off with code GOBIG
72% off estimated retail![Jessica Simpson One Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/591837877/complimentary.jpg)
![Jessica Simpson One Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/591837809/complimentary.jpg)
Jessica Simpson
One Piece Swimsuit
Size 24 mo
$13.99 $7.69 45% off with code GOBIG
18% off estimated retail![Unbranded One Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/587955318/complimentary.jpg)
![Unbranded One Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/587955235/complimentary.jpg)
Unbranded
One Piece Swimsuit
Size Small kids
$16.99 $9.34 45% off with code GOBIG
37% off estimated retail![Stitchy Fish Two Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/584895644/complimentary.jpg)
![Stitchy Fish Two Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/584895608/complimentary.jpg)
Stitchy Fish
Two Piece Swimsuit
Size 18-24 mo
$19.99 $10.99 45% off with code GOBIG
54% off estimated retail![Just One You Made by Carter's Rash Guard (view 2)](https://cf-assets-thredup.thredup.com/assets/582988861/complimentary.jpg)
![Just One You Made by Carter's Rash Guard (view 1)](https://cf-assets-thredup.thredup.com/assets/582988858/complimentary.jpg)
Just One You Made by Carter's
Rash Guard
Size 6 mo
$8.99 $4.94 45% off with code GOBIG
18% off estimated retail![Wonder Nation One Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/568620125/complimentary.jpg)
![Wonder Nation One Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/568620154/complimentary.jpg)
Wonder Nation
One Piece Swimsuit
Size 0-3 mo
$6.99 $3.84 45% off with code GOBIG
36% off estimated retail![Pelle One Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/556250939/complimentary.jpg)
![Pelle One Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/556250904/complimentary.jpg)
Pelle
One Piece Swimsuit
Size Small infants
$14.99 $8.24 45% off with code GOBIG
44% off estimated retail![Egg New York One Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/557192944/complimentary.jpg)
![Egg New York One Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/557192920/complimentary.jpg)
Egg New York
One Piece Swimsuit
Size 18 mo
$17.99 $9.89 45% off with code GOBIG
72% off estimated retail![Tommy Hilfiger One Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/555653157/complimentary.jpg)
![Tommy Hilfiger One Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/555653021/complimentary.jpg)
Tommy Hilfiger
One Piece Swimsuit
Size 6-12 mo
$9.99 $5.49 45% off with code GOBIG
63% off estimated retail![Assorted Brands One Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/551594255/complimentary.jpg)
![Assorted Brands One Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/551594204/complimentary.jpg)
Assorted Brands
One Piece Swimsuit
Size 0-3 mo
$10.99 $6.04 45% off with code GOBIG
50% off estimated retail![Janie and Jack Two Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/540755192/complimentary.jpg)
![Janie and Jack Two Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/540755142/complimentary.jpg)
Janie and Jack
Two Piece Swimsuit
Size 18-24 mo
$7.99 $4.39 45% off with code GOBIG
80% off estimated retail![The Children's Place One Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/538637781/complimentary.jpg)
![The Children's Place One Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/538637756/complimentary.jpg)
The Children's Place
One Piece Swimsuit
Size Medium infants
$8.99 $4.94 45% off with code GOBIG
50% off estimated retail![Hanes Two Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/529764967/complimentary.jpg)
![Hanes Two Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/529764915/complimentary.jpg)
Hanes
Two Piece Swimsuit
Size X-Large youth
$10.99 $6.04 45% off with code GOBIG
37% off estimated retail![Cat & Jack Two Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/527651373/complimentary.jpg)
![Cat & Jack Two Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/527651359/complimentary.jpg)
Cat & Jack
Two Piece Swimsuit
Size Small youth
$10.99 $6.04 45% off with code GOBIG
35% off estimated retail