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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.
615 items
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View Product: Assorted Brands One Piece Swimsuit
Assorted Brands
One Piece Swimsuit
Size X-Large youth
$13.99 $11.19 20% off with code HOTDEAL
57% off estimated retailView Product: Tommy Bahama One Piece Swimsuit
Tommy Bahama
One Piece Swimsuit
Size 24 mo
$11.99 $9.59 20% off with code HOTDEAL
55% off estimated retailView Product: Unbranded One Piece Swimsuit
Unbranded
One Piece Swimsuit
Size 110 cm
$13.99 $11.19 20% off with code HOTDEAL
48% off estimated retailView Product: Shade Critters Two Piece Swimsuit
Shade Critters
Two Piece Swimsuit
Size 6-12 mo
$16.99 $12.74 25% off with code HOTDEAL
61% off estimated retailView Product: Baby Gap Two Piece Swimsuit
Baby Gap
Two Piece Swimsuit
Size 6-12 mo
$11.99 $9.59 20% off with code HOTDEAL
55% off estimated retailView Product: OshKosh B'gosh One Piece Swimsuit
OshKosh B'gosh
One Piece Swimsuit
Size 18 mo
$9.99 $7.99 20% off with code HOTDEAL
58% off estimated retailView Product: Jessica Simpson One Piece Swimsuit
Jessica Simpson
One Piece Swimsuit
Size 12 mo
$10.99 $8.79 20% off with code HOTDEAL
31% off estimated retailView Product: Gymboree One Piece Swimsuit
Gymboree
One Piece Swimsuit
Size 3-6 mo
$18.99 $14.24 25% off with code HOTDEAL
29% off estimated retailView Product: Assorted Brands One Piece Swimsuit
Assorted Brands
One Piece Swimsuit
Size 12 mo
$9.99 $7.99 20% off with code HOTDEAL
54% off estimated retailView Product: Assorted Brands One Piece Swimsuit
Assorted Brands
One Piece Swimsuit
Size 6-12 mo
$11.99 $9.59 20% off with code HOTDEAL
45% off estimated retailView Product: Baby Gap One Piece Swimsuit
Baby Gap
One Piece Swimsuit
Size 6-12 mo
$13.99 $11.19 20% off with code HOTDEAL
48% off estimated retailView Product: Koala Kids One Piece Swimsuit
Koala Kids
One Piece Swimsuit
Size 6-9 mo
$7.99 $6.39 20% off with code HOTDEAL
27% off estimated retailView Product: Old Navy One Piece Swimsuit
Old Navy
One Piece Swimsuit
Size 12-18 mo
$7.99 $6.39 20% off with code HOTDEAL
55% off estimated retailView Product: DVF for Baby Gap One Piece Swimsuit
DVF for Baby Gap
One Piece Swimsuit
Size 2T
$14.99 $11.99 20% off with code HOTDEAL
54% off estimated retailView Product: Baby Gap One Piece Swimsuit
Baby Gap
One Piece Swimsuit
Size 12-18 mo
$7.99 $6.39 20% off with code HOTDEAL
70% off estimated retailView Product: Assorted Brands Two Piece Swimsuit
Assorted Brands
Two Piece Swimsuit
Size 18 mo
$8.99 $7.19 20% off with code HOTDEAL
59% off estimated retailView Product: Janie and Jack One Piece Swimsuit
Janie and Jack
One Piece Swimsuit
Size 3-6 mo
$13.99 $10.49 25% off with code HOTDEAL
66% off estimated retailView Product: Gymboree One Piece Swimsuit
Gymboree
One Piece Swimsuit
Size 12-18 mo
$17.99 $13.49 25% off with code HOTDEAL
33% off estimated retailView Product: Egg by Susan Lazar One Piece Swimsuit
Egg by Susan Lazar
One Piece Swimsuit
Size 12 mo
$16.99 $12.74 25% off with code HOTDEAL
22% off estimated retailView Product: Old Navy One Piece Swimsuit
Old Navy
One Piece Swimsuit
Size X-Small tots
$10.99 $8.79 20% off with code HOTDEAL
38% off estimated retailView Product: Lands' End Rash Guard
Lands' End
Rash Guard
Size Small infants
$12.99 $9.74 25% off with code HOTDEAL
48% off estimated retailView Product: Lands' End Rash Guard
Lands' End
Rash Guard
Size Medium infants
$13.99 $10.49 25% off with code HOTDEAL
44% off estimated retailView Product: Pelle One Piece Swimsuit
Pelle
One Piece Swimsuit
Size Small infants
$14.99 $11.99 20% off with code HOTDEAL
44% off estimated retailView Product: Egg New York One Piece Swimsuit
Egg New York
One Piece Swimsuit
Size 18 mo
$17.99 $13.49 25% off with code HOTDEAL
72% off estimated retailView Product: Unbranded One Piece Swimsuit
Unbranded
One Piece Swimsuit
Size 2X-large kids
$15.99 $12.79 20% off with code HOTDEAL
51% off estimated retailView Product: Tommy Hilfiger One Piece Swimsuit
Tommy Hilfiger
One Piece Swimsuit
Size 6-12 mo
$10.99 $8.79 20% off with code HOTDEAL
59% off estimated retailView Product: Hanna Andersson Rash Guard
Hanna Andersson
Rash Guard
Size 6-12 mo
$23.99 $14.39 40% off with code HOTDEAL
41% off estimated retailView Product: Baby Gap One Piece Swimsuit
Baby Gap
One Piece Swimsuit
Size 18-24 mo
$13.99 $11.19 20% off with code HOTDEAL
48% off estimated retailView Product: Assorted Brands Wetsuit
Assorted Brands
Wetsuit
Size X-Large youth
$23.99 $19.19 20% off with code HOTDEAL
63% off estimated retailView Product: Breaking Waves One Piece Swimsuit
Breaking Waves
One Piece Swimsuit
Size 7
$12.99 $10.39 20% off with code HOTDEAL
35% off estimated retailView Product: Jessica Simpson One Piece Swimsuit
Jessica Simpson
One Piece Swimsuit
Size 12 mo
$10.99 $8.79 20% off with code HOTDEAL
31% off estimated retailView Product: Limited Too One Piece Swimsuit
Limited Too
One Piece Swimsuit
Size Small kids
$9.99 $7.99 20% off with code HOTDEAL
63% off estimated retailView Product: Baby Gap One Piece Swimsuit
Baby Gap
One Piece Swimsuit
Size 0-3 mo
$14.99 $11.99 20% off with code HOTDEAL
44% off estimated retailView Product: Egg by Susan Lazar One Piece Swimsuit
Egg by Susan Lazar
One Piece Swimsuit
Size 24 mo
$10.99 $8.79 20% off with code HOTDEAL
50% off estimated retailView Product: SunAlert One Piece Swimsuit
SunAlert
One Piece Swimsuit
Size Medium infants
$6.99 $5.59 20% off with code HOTDEAL
36% off estimated retailView Product: Hanna Andersson Rash Guard
Hanna Andersson
Rash Guard
Size 18-24 mo
$18.99 $11.39 40% off with code HOTDEAL
53% off estimated retailView Product: Athleta Girl x Simone Biles Rash Guard
Athleta Girl x Simone Biles
Rash Guard
Size 14
$24.99 $18.74 25% off with code HOTDEAL
69% off estimated retailView Product: Shade Critters One Piece Swimsuit
Shade Critters
One Piece Swimsuit
Size 6-12 mo
$16.99 $12.74 25% off with code HOTDEAL
61% off estimated retailView Product: Assorted Brands Rash Guard
Assorted Brands
Rash Guard
Size X-Large tots
$12.99 $10.39 20% off with code HOTDEAL
65% off estimated retailView Product: Genuine Girl Board Shorts
Genuine Girl
Board Shorts
Size Medium infants
$5.99 $4.79 20% off with code HOTDEAL
14% off estimated retailView Product: Unbranded One Piece Swimsuit
Unbranded
One Piece Swimsuit
Size 100 cm
$11.99 $9.59 20% off with code HOTDEAL
55% off estimated retailView Product: Assorted Brands Rash Guard
Assorted Brands
Rash Guard
Size Large youth
$26.99 $20.24 25% off with code HOTDEAL
64% off estimated retailView Product: Eberjey Swimsuit Cover Up
Eberjey
Swimsuit Cover Up
Size Medium youth
$19.99 $11.99 40% off with code HOTDEAL
69% off estimated retailView Product: Under Armour Rash Guard
Under Armour
Rash Guard
Size Medium infants
$8.99 $7.19 20% off with code HOTDEAL
66% off estimated retailView Product: Shade Critters One Piece Swimsuit
Shade Critters
One Piece Swimsuit
Size 18-24 mo
$15.99 $11.99 25% off with code HOTDEAL
63% off estimated retailView Product: The Children's Place One Piece Swimsuit
The Children's Place
One Piece Swimsuit
Size Medium infants
$8.99 $7.19 20% off with code HOTDEAL
50% off estimated retailView Product: Limited Too One Piece Swimsuit
Limited Too
One Piece Swimsuit
Size X-Small kids
$11.99 $9.59 20% off with code HOTDEAL
55% off estimated retailView Product: Little Peixoto Two Piece Swimsuit
Little Peixoto
Two Piece Swimsuit
Size 2
$13.99 $11.19 20% off with code HOTDEAL
68% off estimated retailView Product: Sperry Top Sider Rash Guard
Sperry Top Sider
Rash Guard
Size X-Small kids
$10.99 $8.79 20% off with code HOTDEAL
67% off estimated retailView Product: Snowflake Designs One Piece Swimsuit
Snowflake Designs
One Piece Swimsuit
Size Small kids
$12.99 $10.39 20% off with code HOTDEAL
61% off estimated retailView Product: Tommy Bahama Two Piece Swimsuit
Tommy Bahama
Two Piece Swimsuit
Size 18 mo
$11.99 $9.59 20% off with code HOTDEAL
55% off estimated retailView Product: Maui Clothing Company Rash Guard
Maui Clothing Company
Rash Guard
Size 10
$10.99 $8.79 20% off with code HOTDEAL
45% off estimated retailView Product: Old Navy One Piece Swimsuit
Old Navy
One Piece Swimsuit
Size 12-18 mo
$10.99 $8.79 20% off with code HOTDEAL
38% off estimated retailView Product: Tommy Bahama One Piece Swimsuit
Tommy Bahama
One Piece Swimsuit
Size 12 mo
$8.99 $7.19 20% off with code HOTDEAL
66% off estimated retail