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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.
88 items
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View Product: Janie and Jack Board Shorts
Janie and Jack
Board Shorts
Size 12-18 mo
$9.99 $7.99 20% off with code HOTDEAL
44% off estimated retailView Product: Old Navy Two Piece Swimsuit
Old Navy
Two Piece Swimsuit
Size 12-18 mo
$8.99 $7.19 20% off with code HOTDEAL
55% off estimated retailView Product: Old Navy One Piece Swimsuit
Old Navy
One Piece Swimsuit
Size 12-18 mo
$9.99 $7.99 20% off with code HOTDEAL
44% off estimated retailView Product: Crew & Lu One Piece Swimsuit
Crew & Lu
One Piece Swimsuit
Size 12-18 mo
$17.99 $13.49 25% off with code HOTDEAL
69% off estimated retailView Product: Janie and Jack Two Piece Swimsuit
Janie and Jack
Two Piece Swimsuit
Size 12-18 mo
$20.99 $13.64 35% off with code HOTDEAL
50% off estimated retailView Product: Grace & James One Piece Swimsuit
Grace & James
One Piece Swimsuit
Size 12-18 mo
$20.99 $14.69 30% off with code HOTDEAL
39% off estimated retailView Product: Old Navy Two Piece Swimsuit
Old Navy
Two Piece Swimsuit
Size 12-18 mo
$8.99 $7.19 20% off with code HOTDEAL
55% off estimated retailView Product: Janie and Jack One Piece Swimsuit
Janie and Jack
One Piece Swimsuit
Size 12-18 mo
$23.99 $16.79 30% off with code HOTDEAL
52% off estimated retailView Product: Old Navy One Piece Swimsuit
Old Navy
One Piece Swimsuit
Size 12-18 mo
$15.99 $11.19 30% off with code HOTDEAL
16% off estimated retailView Product: Janie and Jack One Piece Swimsuit
Janie and Jack
One Piece Swimsuit
Size 12-18 mo
$17.99 $13.49 25% off with code HOTDEAL
64% off estimated retailView Product: Unbranded One Piece Swimsuit
Unbranded
One Piece Swimsuit
Size 12-18 mo
$14.99 $11.99 20% off with code HOTDEAL
36% off estimated retailView Product: Old Navy One Piece Swimsuit
Old Navy
One Piece Swimsuit
Size 12-18 mo
$11.99 $9.59 20% off with code HOTDEAL
38% off estimated retailView Product: Baby Gap Two Piece Swimsuit
Baby Gap
Two Piece Swimsuit
Size 12-18 mo
$15.99 $12.79 20% off with code HOTDEAL
51% off estimated retailView Product: Unbranded One Piece Swimsuit
Unbranded
One Piece Swimsuit
Size 12-18 mo
$10.99 $8.79 20% off with code HOTDEAL
54% off estimated retailView Product: Old Navy One Piece Swimsuit
Old Navy
One Piece Swimsuit
Size 12-18 mo
$14.99 $11.99 20% off with code HOTDEAL
22% off estimated retailView Product: The Children's Place One Piece Swimsuit
The Children's Place
One Piece Swimsuit
Size 12-18 mo
$8.99 $7.19 20% off with code HOTDEAL
55% off estimated retailView Product: Baby Gap One Piece Swimsuit
Baby Gap
One Piece Swimsuit
Size 12-18 mo
$13.99 $11.19 20% off with code HOTDEAL
55% off estimated retailView Product: Baby Gap One Piece Swimsuit
Baby Gap
One Piece Swimsuit
Size 12-18 mo
$12.99 $10.39 20% off with code HOTDEAL
59% off estimated retailView Product: Roller Rabbit One Piece Swimsuit
Roller Rabbit
One Piece Swimsuit
Size 12-18 mo
$28.99 $21.74 25% off with code HOTDEAL
45% off estimated retailView Product: Baby Gap One Piece Swimsuit
Baby Gap
One Piece Swimsuit
Size 12-18 mo
$12.99 $10.39 20% off with code HOTDEAL
59% off estimated retailView Product: Old Navy One Piece Swimsuit
Old Navy
One Piece Swimsuit
Size 12-18 mo
$8.99 $7.19 20% off with code HOTDEAL
55% off estimated retailView Product: Old Navy One Piece Swimsuit
Old Navy
One Piece Swimsuit
Size 12-18 mo
$11.99 $9.59 20% off with code HOTDEAL
38% off estimated retailView Product: Cat & Jack One Piece Swimsuit
Cat & Jack
One Piece Swimsuit
Size 12-18 mo
$10.99 $8.79 20% off with code HOTDEAL
47% off estimated retailView Product: Baby Gap One Piece Swimsuit
Baby Gap
One Piece Swimsuit
Size 12-18 mo
$15.99 $12.79 20% off with code HOTDEAL
51% off estimated retailView Product: Gymboree One Piece Swimsuit
Gymboree
One Piece Swimsuit
Size 12-18 mo
$23.99 $17.99 25% off with code HOTDEAL
25% off estimated retailView Product: Old Navy One Piece Swimsuit
Old Navy
One Piece Swimsuit
Size 12-18 mo
$13.99 $11.19 20% off with code HOTDEAL
27% off estimated retailView Product: Disney Store One Piece Swimsuit
Disney Store
One Piece Swimsuit
Size 12-18 mo
$11.99 $9.59 20% off with code HOTDEAL
28% off estimated retailView Product: Old Navy One Piece Swimsuit
Old Navy
One Piece Swimsuit
Size 12-18 mo
$8.99 $5.84 35% off with code HOTDEAL
55% off estimated retailView Product: Baby Gap One Piece Swimsuit
Baby Gap
One Piece Swimsuit
Size 12-18 mo
$8.99 $5.84 35% off with code HOTDEAL
70% off estimated retailView Product: Old Navy One Piece Swimsuit
Old Navy
One Piece Swimsuit
Size 12-18 mo
$11.99 $7.79 35% off with code HOTDEAL
38% off estimated retailView Product: Gymboree One Piece Swimsuit
Gymboree
One Piece Swimsuit
Size 12-18 mo
$21.99 $13.19 40% off with code HOTDEAL
33% off estimated retailView Product: OshKosh B'gosh Two Piece Swimsuit
OshKosh B'gosh
Two Piece Swimsuit
Size 12-18 mo
$15.99 $10.39 35% off with code HOTDEAL
45% off estimated retailView Product: Disney for Baby Gap Board Shorts
Disney for Baby Gap
Board Shorts
Size 12-18 mo
$9.99 $5.99 40% off with code HOTDEAL
33% off estimated retailView Product: The Children's Place One Piece Swimsuit
The Children's Place
One Piece Swimsuit
Size 12-18 mo
$10.99 $7.14 35% off with code HOTDEAL
50% off estimated retailView Product: Old Navy One Piece Swimsuit
Old Navy
One Piece Swimsuit
Size 12-18 mo
$13.99 $9.09 35% off with code HOTDEAL
27% off estimated retailView Product: Old Navy One Piece Swimsuit
Old Navy
One Piece Swimsuit
Size 12-18 mo
$11.99 $7.19 40% off with code HOTDEAL
38% off estimated retailView Product: Stella Cove One Piece Swimsuit
Stella Cove
One Piece Swimsuit
Size 12-18 mo
$11.99 $7.19 40% off with code HOTDEAL
63% off estimated retailView Product: Gymboree One Piece Swimsuit
Gymboree
One Piece Swimsuit
Size 12-18 mo
$14.99 $8.99 40% off with code HOTDEAL
63% off estimated retailView Product: Snapper Rock One Piece Swimsuit
Snapper Rock
One Piece Swimsuit
Size 12-18 mo
$10.99 $6.59 40% off with code HOTDEAL
43% off estimated retailView Product: Ruffle Butts Two Piece Swimsuit
Ruffle Butts
Two Piece Swimsuit
Size 12-18 mo
$10.99 $6.59 40% off with code HOTDEAL
18% off estimated retailView Product: The Children's Place Two Piece Swimsuit
The Children's Place
Two Piece Swimsuit
Size 12-18 mo
$11.99 $7.19 40% off with code HOTDEAL
44% off estimated retailView Product: The Children's Place Two Piece Swimsuit
The Children's Place
Two Piece Swimsuit
Size 12-18 mo
$10.99 $6.59 40% off with code HOTDEAL
50% off estimated retailView Product: Old Navy Two Piece Swimsuit
Old Navy
Two Piece Swimsuit
Size 12-18 mo
$10.99 $6.59 40% off with code HOTDEAL
44% off estimated retailView Product: Old Navy One Piece Swimsuit
Old Navy
One Piece Swimsuit
Size 12-18 mo
$9.99 $5.99 40% off with code HOTDEAL
50% off estimated retailView Product: Max Grey One Piece Swimsuit
Max Grey
One Piece Swimsuit
Size 12-18 mo
$9.99 $5.99 40% off with code HOTDEAL
18% off estimated retailView Product: Lands' End One Piece Swimsuit
Lands' End
One Piece Swimsuit
Size 12-18 mo
$12.24 $7.34 40% off with code HOTDEAL
65% off estimated retailView Product: Old Navy One Piece Swimsuit
Old Navy
One Piece Swimsuit
Size 12-18 mo
$11.24 $6.74 40% off with code HOTDEAL
50% off estimated retailView Product: Baby Gap One Piece Swimsuit
Baby Gap
One Piece Swimsuit
Size 12-18 mo
$11.24 $6.74 40% off with code HOTDEAL
66% off estimated retailView Product: Assorted Brands One Piece Swimsuit
Assorted Brands
One Piece Swimsuit
Size 12-18 mo
$11.24 $6.74 40% off with code HOTDEAL
59% off estimated retailView Product: Koala Kids One Piece Swimsuit
Koala Kids
One Piece Swimsuit
Size 12-18 mo
$10.99 $6.59 40% off with code HOTDEAL
10% off estimated retailView Product: The Children's Place One Piece Swimsuit
The Children's Place
One Piece Swimsuit
Size 12-18 mo
$10.99 $6.59 40% off with code HOTDEAL
50% off estimated retailView Product: Old Navy Two Piece Swimsuit
Old Navy
Two Piece Swimsuit
Size 12-18 mo
$9.99 $5.99 40% off with code HOTDEAL
28% off estimated retailView Product: Assorted Brands One Piece Swimsuit
Assorted Brands
One Piece Swimsuit
Size 12-18 mo
$8.99 $5.39 40% off with code HOTDEAL
60% off estimated retailView Product: Assorted Brands One Piece Swimsuit
Assorted Brands
One Piece Swimsuit
Size 12-18 mo
$12.24 $7.34 40% off with code HOTDEAL
63% off estimated retailView Product: Old Navy One Piece Swimsuit
Old Navy
One Piece Swimsuit
Size 12-18 mo
$12.24 $7.34 40% off with code HOTDEAL
50% off estimated retailView Product: Gymboree One Piece Swimsuit
Gymboree
One Piece Swimsuit
Size 12-18 mo
$9.24 $5.54 40% off with code HOTDEAL
68% off estimated retailView Product: Baby Gap Swimsuit Cover Up
Baby Gap
Swimsuit Cover Up
Size 12-18 mo
$10.24 $6.14 40% off with code HOTDEAL
60% off estimated retailView Product: Gymboree One Piece Swimsuit
Gymboree
One Piece Swimsuit
Size 12-18 mo
$11.24 $6.74 40% off with code HOTDEAL
64% off estimated retailView Product: Old Navy One Piece Swimsuit
Old Navy
One Piece Swimsuit
Size 12-18 mo
$11.24 $6.74 40% off with code HOTDEAL
47% off estimated retailView Product: Unbranded One Piece Swimsuit
Unbranded
One Piece Swimsuit
Size 12-18 mo
$10.24 $6.14 40% off with code HOTDEAL
65% off estimated retailView Product: Floatimini One Piece Swimsuit
Floatimini
One Piece Swimsuit
Size 12-18 mo
$8.24 $4.94 40% off with code HOTDEAL
86% off estimated retailView Product: Unbranded One Piece Swimsuit
Unbranded
One Piece Swimsuit
Size 12-18 mo
$8.99 $5.39 40% off with code HOTDEAL
60% off estimated retailView Product: Old Navy Outlet One Piece Swimsuit
Old Navy Outlet
One Piece Swimsuit
Size 12-18 mo
$8.99 $5.39 40% off with code HOTDEAL
20% off estimated retail