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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.
89 items
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View Product: UV Skinz Two Piece Swimsuit
UV Skinz
Two Piece Swimsuit
Size 12-18 mo
$9.99 $7.49 25% off with code THRIFT25
63% off estimated retailView Product: Ruffle Butts Two Piece Swimsuit
Ruffle Butts
Two Piece Swimsuit
Size 12-18 mo
$8.99 $6.74 25% off with code THRIFT25
18% off estimated retailView Product: The Beaufort Bonnet Company One Piece Swimsuit
The Beaufort Bonnet Company
One Piece Swimsuit
Size 12-18 mo
$19.99 $14.99 25% off with code THRIFT25
63% off estimated retailView Product: Primary Clothing Wetsuit
Primary Clothing
Wetsuit
Size 12-18 mo
$13.99 $10.49 25% off with code THRIFT25
74% off estimated retailView Product: Hanna Andersson One Piece Swimsuit
Hanna Andersson
One Piece Swimsuit
Size 12-18 mo
$22.99 $17.24 25% off with code THRIFT25
43% off estimated retailView Product: Old Navy One Piece Swimsuit
Old Navy
One Piece Swimsuit
Size 12-18 mo
$9.99 $7.49 25% off with code THRIFT25
44% off estimated retailView Product: Crew & Lu One Piece Swimsuit
Crew & Lu
One Piece Swimsuit
Size 12-18 mo
$18.99 $14.24 25% off with code THRIFT25
65% off estimated retailView Product: Lilly Pulitzer One Piece Swimsuit
Lilly Pulitzer
One Piece Swimsuit
Size 12-18 mo
$18.99 $14.24 25% off with code THRIFT25
42% off estimated retailView Product: Janie and Jack Two Piece Swimsuit
Janie and Jack
Two Piece Swimsuit
Size 12-18 mo
$24.99 $18.74 25% off with code THRIFT25
40% off estimated retailView Product: Grace & James One Piece Swimsuit
Grace & James
One Piece Swimsuit
Size 12-18 mo
$19.99 $14.99 25% off with code THRIFT25
39% off estimated retailView Product: Old Navy Two Piece Swimsuit
Old Navy
Two Piece Swimsuit
Size 12-18 mo
$7.99 $5.99 25% off with code THRIFT25
55% off estimated retailView Product: Janie and Jack One Piece Swimsuit
Janie and Jack
One Piece Swimsuit
Size 12-18 mo
$19.99 $14.99 25% off with code THRIFT25
52% off estimated retailView Product: Andy & Evan Board Shorts
Andy & Evan
Board Shorts
Size 12-18 mo
$15.99 $11.99 25% off with code THRIFT25
55% off estimated retailView Product: Old Navy One Piece Swimsuit
Old Navy
One Piece Swimsuit
Size 12-18 mo
$14.99 $11.24 25% off with code THRIFT25
16% off estimated retailView Product: Janie and Jack One Piece Swimsuit
Janie and Jack
One Piece Swimsuit
Size 12-18 mo
$14.99 $11.24 25% off with code THRIFT25
64% off estimated retailView Product: Unbranded One Piece Swimsuit
Unbranded
One Piece Swimsuit
Size 12-18 mo
$13.99 $10.49 25% off with code THRIFT25
36% off estimated retailView Product: Old Navy One Piece Swimsuit
Old Navy
One Piece Swimsuit
Size 12-18 mo
$10.99 $8.24 25% off with code THRIFT25
38% off estimated retailView Product: Mud Pie One Piece Swimsuit
Mud Pie
One Piece Swimsuit
Size 12-18 mo
$13.99 $10.49 25% off with code THRIFT25
36% off estimated retailView Product: Baby Gap Two Piece Swimsuit
Baby Gap
Two Piece Swimsuit
Size 12-18 mo
$12.99 $9.74 25% off with code THRIFT25
51% off estimated retailView Product: Unbranded One Piece Swimsuit
Unbranded
One Piece Swimsuit
Size 12-18 mo
$9.99 $7.49 25% off with code THRIFT25
54% off estimated retailView Product: Old Navy One Piece Swimsuit
Old Navy
One Piece Swimsuit
Size 12-18 mo
$13.99 $10.49 25% off with code THRIFT25
22% off estimated retailView Product: The Children's Place One Piece Swimsuit
The Children's Place
One Piece Swimsuit
Size 12-18 mo
$7.99 $5.99 25% off with code THRIFT25
55% off estimated retailView Product: Baby Gap One Piece Swimsuit
Baby Gap
One Piece Swimsuit
Size 12-18 mo
$11.99 $8.99 25% off with code THRIFT25
55% off estimated retailView Product: Baby Gap One Piece Swimsuit
Baby Gap
One Piece Swimsuit
Size 12-18 mo
$10.99 $8.24 25% off with code THRIFT25
59% off estimated retailView Product: Roller Rabbit One Piece Swimsuit
Roller Rabbit
One Piece Swimsuit
Size 12-18 mo
$23.99 $17.99 25% off with code THRIFT25
45% off estimated retailView Product: Baby Gap One Piece Swimsuit
Baby Gap
One Piece Swimsuit
Size 12-18 mo
$10.99 $8.24 25% off with code THRIFT25
59% off estimated retailView Product: Old Navy One Piece Swimsuit
Old Navy
One Piece Swimsuit
Size 12-18 mo
$7.99 $5.99 25% off with code THRIFT25
55% off estimated retailView Product: Old Navy One Piece Swimsuit
Old Navy
One Piece Swimsuit
Size 12-18 mo
$10.99 $8.24 25% off with code THRIFT25
38% off estimated retailView Product: Cat & Jack One Piece Swimsuit
Cat & Jack
One Piece Swimsuit
Size 12-18 mo
$8.99 $6.74 25% off with code THRIFT25
47% off estimated retailView Product: Baby Gap One Piece Swimsuit
Baby Gap
One Piece Swimsuit
Size 12-18 mo
$12.99 $9.74 25% off with code THRIFT25
51% off estimated retailView Product: Gymboree One Piece Swimsuit
Gymboree
One Piece Swimsuit
Size 12-18 mo
$19.99 $14.99 25% off with code THRIFT25
25% off estimated retailView Product: Old Navy One Piece Swimsuit
Old Navy
One Piece Swimsuit
Size 12-18 mo
$12.99 $9.74 25% off with code THRIFT25
27% off estimated retailView Product: Disney Store One Piece Swimsuit
Disney Store
One Piece Swimsuit
Size 12-18 mo
$9.99 $7.49 25% off with code THRIFT25
28% off estimated retailView Product: Old Navy One Piece Swimsuit
Old Navy
One Piece Swimsuit
Size 12-18 mo
$7.99 $5.99 25% off with code THRIFT25
55% off estimated retailView Product: Baby Gap One Piece Swimsuit
Baby Gap
One Piece Swimsuit
Size 12-18 mo
$7.99 $5.99 25% off with code THRIFT25
70% off estimated retailView Product: Old Navy One Piece Swimsuit
Old Navy
One Piece Swimsuit
Size 12-18 mo
$10.99 $8.24 25% off with code THRIFT25
38% off estimated retailView Product: Janie and Jack Rash Guard
Janie and Jack
Rash Guard
Size 12-18 mo
$10.99 $8.24 25% off with code THRIFT25
64% off estimated retailView Product: Gymboree One Piece Swimsuit
Gymboree
One Piece Swimsuit
Size 12-18 mo
$17.99 $13.49 25% off with code THRIFT25
33% off estimated retailView Product: OshKosh B'gosh Two Piece Swimsuit
OshKosh B'gosh
Two Piece Swimsuit
Size 12-18 mo
$12.99 $9.74 25% off with code THRIFT25
45% off estimated retailView Product: Disney for Baby Gap Board Shorts
Disney for Baby Gap
Board Shorts
Size 12-18 mo
$9.99 $7.49 25% off with code THRIFT25
33% off estimated retailView Product: The Children's Place One Piece Swimsuit
The Children's Place
One Piece Swimsuit
Size 12-18 mo
$8.99 $6.74 25% off with code THRIFT25
50% off estimated retailView Product: Old Navy One Piece Swimsuit
Old Navy
One Piece Swimsuit
Size 12-18 mo
$12.99 $9.74 25% off with code THRIFT25
27% off estimated retailView Product: Janie and Jack One Piece Swimsuit
Janie and Jack
One Piece Swimsuit
Size 12-18 mo
$18.99 $14.24 25% off with code THRIFT25
54% off estimated retailView Product: Old Navy One Piece Swimsuit
Old Navy
One Piece Swimsuit
Size 12-18 mo
$11.99 $8.99 25% off with code THRIFT25
33% off estimated retailView Product: Old Navy One Piece Swimsuit
Old Navy
One Piece Swimsuit
Size 12-18 mo
$10.99 $8.24 25% off with code THRIFT25
38% off estimated retailView Product: Stella Cove One Piece Swimsuit
Stella Cove
One Piece Swimsuit
Size 12-18 mo
$9.99 $7.49 25% off with code THRIFT25
63% off estimated retailView Product: Gymboree One Piece Swimsuit
Gymboree
One Piece Swimsuit
Size 12-18 mo
$9.99 $7.49 25% off with code THRIFT25
63% off estimated retailView Product: Snapper Rock One Piece Swimsuit
Snapper Rock
One Piece Swimsuit
Size 12-18 mo
$8.99 $6.74 25% off with code THRIFT25
43% off estimated retailView Product: Baby Gap One Piece Swimsuit
Baby Gap
One Piece Swimsuit
Size 12-18 mo
$9.99 $7.49 25% off with code THRIFT25
63% off estimated retailView Product: Old Navy Two Piece Swimsuit
Old Navy
Two Piece Swimsuit
Size 12-18 mo
$9.99 $7.49 25% off with code THRIFT25
44% off estimated retailView Product: Old Navy One Piece Swimsuit
Old Navy
One Piece Swimsuit
Size 12-18 mo
$8.99 $6.74 25% off with code THRIFT25
50% off estimated retailView Product: Max Grey One Piece Swimsuit
Max Grey
One Piece Swimsuit
Size 12-18 mo
$8.99 $6.74 25% off with code THRIFT25
18% off estimated retailView Product: Lands' End One Piece Swimsuit
Lands' End
One Piece Swimsuit
Size 12-18 mo
$9.99 $7.49 25% off with code THRIFT25
65% off estimated retailView Product: Old Navy One Piece Swimsuit
Old Navy
One Piece Swimsuit
Size 12-18 mo
$8.99 $6.74 25% off with code THRIFT25
50% off estimated retailView Product: Baby Gap One Piece Swimsuit
Baby Gap
One Piece Swimsuit
Size 12-18 mo
$8.99 $6.74 25% off with code THRIFT25
66% off estimated retailView Product: Assorted Brands One Piece Swimsuit
Assorted Brands
One Piece Swimsuit
Size 12-18 mo
$8.99 $6.74 25% off with code THRIFT25
59% off estimated retailView Product: Koala Kids One Piece Swimsuit
Koala Kids
One Piece Swimsuit
Size 12-18 mo
$8.99 $6.74 25% off with code THRIFT25
10% off estimated retailView Product: The Children's Place One Piece Swimsuit
The Children's Place
One Piece Swimsuit
Size 12-18 mo
$8.99 $6.74 25% off with code THRIFT25
50% off estimated retailView Product: Old Navy Two Piece Swimsuit
Old Navy
Two Piece Swimsuit
Size 12-18 mo
$8.99 $6.74 25% off with code THRIFT25
28% off estimated retailView Product: Assorted Brands One Piece Swimsuit
Assorted Brands
One Piece Swimsuit
Size 12-18 mo
$7.99 $5.99 25% off with code THRIFT25
60% off estimated retailView Product: Assorted Brands One Piece Swimsuit
Assorted Brands
One Piece Swimsuit
Size 12-18 mo
$7.99 $5.99 25% off with code THRIFT25
63% off estimated retailView Product: Old Navy One Piece Swimsuit
Old Navy
One Piece Swimsuit
Size 12-18 mo
$8.99 $6.74 25% off with code THRIFT25
50% off estimated retailView Product: Baby Gap Two Piece Swimsuit
Baby Gap
Two Piece Swimsuit
Size 12-18 mo
$7.99 $5.99 25% off with code THRIFT25
68% off estimated retailView Product: Gymboree One Piece Swimsuit
Gymboree
One Piece Swimsuit
Size 12-18 mo
$7.99 $5.99 25% off with code THRIFT25
68% off estimated retailView Product: Baby Gap Swimsuit Cover Up
Baby Gap
Swimsuit Cover Up
Size 12-18 mo
$7.99 $5.99 25% off with code THRIFT25
60% off estimated retailView Product: Gymboree One Piece Swimsuit
Gymboree
One Piece Swimsuit
Size 12-18 mo
$8.99 $6.74 25% off with code THRIFT25
64% off estimated retailView Product: Old Navy One Piece Swimsuit
Old Navy
One Piece Swimsuit
Size 12-18 mo
$8.99 $6.74 25% off with code THRIFT25
47% off estimated retailView Product: Unbranded One Piece Swimsuit
Unbranded
One Piece Swimsuit
Size 12-18 mo
$6.99 $5.24 25% off with code THRIFT25
65% off estimated retailView Product: Floatimini One Piece Swimsuit
Floatimini
One Piece Swimsuit
Size 12-18 mo
$6.99 $5.24 25% off with code THRIFT25
86% off estimated retailView Product: Unbranded One Piece Swimsuit
Unbranded
One Piece Swimsuit
Size 12-18 mo
$7.99 $5.99 25% off with code THRIFT25
60% off estimated retailView Product: Old Navy Outlet One Piece Swimsuit
Old Navy Outlet
One Piece Swimsuit
Size 12-18 mo
$7.99 $5.99 25% off with code THRIFT25
20% off estimated retail