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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.
415 items
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View Product: Lilly Pulitzer Two Piece Swimsuit
Lilly Pulitzer
Two Piece Swimsuit
Size 14
$38.99 $21.44 45% off with code GOBIG
20% off estimated retailView Product: Lilly Pulitzer Two Piece Swimsuit
Lilly Pulitzer
Two Piece Swimsuit
Size 12
$37.99 $20.89 45% off with code GOBIG
22% off estimated retailView Product: Cat & Jack Two Piece Swimsuit
Cat & Jack
Two Piece Swimsuit
Size Medium kids
$9.99 $5.49 45% off with code GOBIG
41% off estimated retailView Product: Cat & Jack One Piece Swimsuit
Cat & Jack
One Piece Swimsuit
Size X-Small youth
$9.99 $5.49 45% off with code GOBIG
41% off estimated retailView Product: Gymboree One Piece Swimsuit
Gymboree
One Piece Swimsuit
Size 12-18 mo
$18.99 $10.44 45% off with code GOBIG
29% off estimated retailView Product: Athleta Girl x Simone Biles Rash Guard
Athleta Girl x Simone Biles
Rash Guard
Size 14
$15.99 $8.79 45% off with code GOBIG
70% off estimated retailView Product: Assorted Brands One Piece Swimsuit
Assorted Brands
One Piece Swimsuit
Size 8
$18.99 $10.44 45% off with code GOBIG
54% off estimated retailView Product: Serendipity by Shrimp and Grits One Piece Swimsuit
Serendipity by Shrimp and Grits
One Piece Swimsuit
Size 4T
$17.99 $9.89 45% off with code GOBIG
48% off estimated retailView Product: Ralph Lauren One Piece Swimsuit
Ralph Lauren
One Piece Swimsuit
Size 12 mo
$13.99 $7.69 45% off with code GOBIG
73% off estimated retailView Product: Assorted Brands One Piece Swimsuit
Assorted Brands
One Piece Swimsuit
Size 140 cm
$20.99 $11.54 45% off with code GOBIG
48% off estimated retailView Product: Wonder Nation Two Piece Swimsuit
Wonder Nation
Two Piece Swimsuit
Size 10 Plus
$9.99 $5.49 45% off with code GOBIG
37% off estimated retailView Product: Assorted Brands Two Piece Swimsuit
Assorted Brands
Two Piece Swimsuit
Size 14
$15.99 $8.79 45% off with code GOBIG
60% off estimated retailView Product: Snowflake Designs One Piece Swimsuit
Snowflake Designs
One Piece Swimsuit
Size Medium kids
$14.99 $8.24 45% off with code GOBIG
55% off estimated retailView Product: Assorted Brands One Piece Swimsuit
Assorted Brands
One Piece Swimsuit
Size 16
$16.99 $9.34 45% off with code GOBIG
57% off estimated retailView Product: Assorted Brands One Piece Swimsuit
Assorted Brands
One Piece Swimsuit
Size 5T
$14.99 $8.24 45% off with code GOBIG
55% off estimated retailView Product: Vineyard Vines One Piece Swimsuit
Vineyard Vines
One Piece Swimsuit
Size Large kids
$38.99 $21.44 45% off with code GOBIG
73% off estimated retailView Product: Assorted Brands One Piece Swimsuit
Assorted Brands
One Piece Swimsuit
Size 6X
$12.99 $7.14 45% off with code GOBIG
60% off estimated retailView Product: Gap Kids One Piece Swimsuit
Gap Kids
One Piece Swimsuit
Size X-Large kids
$20.99 $11.54 45% off with code GOBIG
51% off estimated retailView Product: Tommy Bahama One Piece Swimsuit
Tommy Bahama
One Piece Swimsuit
Size 3-6 mo
$14.99 $8.24 45% off with code GOBIG
48% off estimated retailView Product: Assorted Brands Two Piece Swimsuit
Assorted Brands
Two Piece Swimsuit
Size Small tots
$12.99 $7.14 45% off with code GOBIG
54% off estimated retailView Product: Ruffle Butts One Piece Swimsuit
Ruffle Butts
One Piece Swimsuit
Size 12-18 mo
$8.99 $4.94 45% off with code GOBIG
18% off estimated retailView Product: Unbranded One Piece Swimsuit
Unbranded
One Piece Swimsuit
Size Small tots
$12.99 $7.14 45% off with code GOBIG
45% off estimated retailView Product: Coolibar One Piece Swimsuit
Coolibar
One Piece Swimsuit
Size Large youth
$25.99 $14.29 45% off with code GOBIG
46% off estimated retailView Product: Wonder Nation Two Piece Swimsuit
Wonder Nation
Two Piece Swimsuit
Size X-Small kids
$10.99 $6.04 45% off with code GOBIG
21% off estimated retailView Product: Hanna Andersson One Piece Swimsuit
Hanna Andersson
One Piece Swimsuit
Size 120 cm
$24.99 $13.74 45% off with code GOBIG
39% off estimated retail