Trending Categories
Trending Brands
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.
2,112 items
Sort by:
View Product: Assorted Brands One Piece Swimsuit
Assorted Brands
One Piece Swimsuit
Size 6-9 mo
$11.99 $7.19 40% off with code HOTDEAL
54% 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: Gymboree One Piece Swimsuit
Gymboree
One Piece Swimsuit
Size 6-12 mo
$13.99 $8.39 40% off with code HOTDEAL
63% off estimated retailView Product: Cat & Jack One Piece Swimsuit
Cat & Jack
One Piece Swimsuit
Size Medium kids
$12.99 $7.79 40% off with code HOTDEAL
35% off estimated retailView Product: GG The Brand One Piece Swimsuit
GG The Brand
One Piece Swimsuit
Size 80 cm
$9.99 $5.99 40% off with code HOTDEAL
43% off estimated retailView Product: Betsey Johnson Two Piece Swimsuit
Betsey Johnson
Two Piece Swimsuit
Size Medium infants
$8.99 $5.39 40% off with code HOTDEAL
70% 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: Assorted Brands One Piece Swimsuit
Assorted Brands
One Piece Swimsuit
Size 4
$14.99 $8.99 40% off with code HOTDEAL
77% 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: Just One You Made by Carter's Rash Guard
Just One You Made by Carter's
Rash Guard
Size 5T
$10.99 $6.59 40% off with code HOTDEAL
35% off estimated retailView Product: Crown & Ivy One Piece Swimsuit
Crown & Ivy
One Piece Swimsuit
Size 12 mo
$15.99 $9.59 40% off with code HOTDEAL
77% off estimated retailView Product: Gap Kids Two Piece Swimsuit
Gap Kids
Two Piece Swimsuit
Size Small kids
$20.99 $8.40 60% off with code HOTDEAL
46% off estimated retailView Product: Assorted Brands Two Piece Swimsuit
Assorted Brands
Two Piece Swimsuit
Size 110 cm
$11.99 $7.19 40% off with code HOTDEAL
63% off estimated retailView Product: The Children's Place One Piece Swimsuit
The Children's Place
One Piece Swimsuit
Size 12 mo
$11.99 $7.19 40% off with code HOTDEAL
44% off estimated retailView Product: Azul Swimwear One Piece Swimsuit
Azul Swimwear
One Piece Swimsuit
Size 18 mo
$11.99 $7.19 40% off with code HOTDEAL
54% off estimated retailView Product: Tucker + Tate One Piece Swimsuit
Tucker + Tate
One Piece Swimsuit
Size 9 mo
$10.99 $6.59 40% off with code HOTDEAL
66% off estimated retailView Product: Unbranded One Piece Swimsuit
Unbranded
One Piece Swimsuit
Size Medium kids
$14.24 $8.54 40% off with code HOTDEAL
63% off estimated retailView Product: Unbranded One Piece Swimsuit
Unbranded
One Piece Swimsuit
Size 150 cm
$16.24 $8.93 45% off with code HOTDEAL
63% off estimated retailView Product: Old Navy One Piece Swimsuit
Old Navy
One Piece Swimsuit
Size Medium infants
$13.24 $7.94 40% off with code HOTDEAL
44% off estimated retailView Product: Unbranded One Piece Swimsuit
Unbranded
One Piece Swimsuit
Size Large infants
$11.99 $7.19 40% off with code HOTDEAL
54% off estimated retailView Product: First Impressions One Piece Swimsuit
First Impressions
One Piece Swimsuit
Size 24 mo
$8.99 $5.39 40% off with code HOTDEAL
70% off estimated retailView Product: Unbranded One Piece Swimsuit
Unbranded
One Piece Swimsuit
Size 150 cm
$11.99 $7.19 40% off with code HOTDEAL
69% off estimated retailView Product: The Children's Place Swimsuit Cover Up
The Children's Place
Swimsuit Cover Up
Size X-Large tots
$10.99 $6.59 40% off with code HOTDEAL
35% off estimated retailView Product: Assorted Brands One Piece Swimsuit
Assorted Brands
One Piece Swimsuit
Size 6
$11.24 $6.74 40% off with code HOTDEAL
69% off estimated retailView Product: Jessica Simpson One Piece Swimsuit
Jessica Simpson
One Piece Swimsuit
Size 18 mo
$12.24 $7.34 40% off with code HOTDEAL
37% off estimated retailView Product: Penelope Mack One Piece Swimsuit
Penelope Mack
One Piece Swimsuit
Size 6
$17.99 $10.79 40% off with code HOTDEAL
54% off estimated retailView Product: Gap Kids One Piece Swimsuit
Gap Kids
One Piece Swimsuit
Size X-Large youth
$18.99 $7.60 60% off with code HOTDEAL
62% off estimated retailView Product: Cat & Jack Rash Guard
Cat & Jack
Rash Guard
Size X-Large youth
$11.99 $7.19 40% off with code HOTDEAL
50% off estimated retailView Product: Cat & Jack Rash Guard
Cat & Jack
Rash Guard
Size Large infants
$11.99 $7.19 40% off with code HOTDEAL
50% off estimated retailView Product: Gap One Piece Swimsuit
Gap
One Piece Swimsuit
Size Medium infants
$10.99 $6.59 40% off with code HOTDEAL
66% off estimated retailView Product: Old Navy One Piece Swimsuit
Old Navy
One Piece Swimsuit
Size 18-24 mo
$11.99 $7.19 40% off with code HOTDEAL
44% off estimated retailView Product: Unbranded One Piece Swimsuit
Unbranded
One Piece Swimsuit
Size X-Large youth
$12.99 $7.79 40% off with code HOTDEAL
69% off estimated retailView Product: Old Navy One Piece Swimsuit
Old Navy
One Piece Swimsuit
Size 6-12 mo
$12.24 $7.34 40% off with code HOTDEAL
44% 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: Unbranded One Piece Swimsuit
Unbranded
One Piece Swimsuit
Size Small infants
$10.99 $6.59 40% off with code HOTDEAL
54% off estimated retailView Product: Unbranded One Piece Swimsuit
Unbranded
One Piece Swimsuit
Size Small infants
$9.99 $5.99 40% off with code HOTDEAL
59% off estimated retailView Product: Unbranded One Piece Swimsuit
Unbranded
One Piece Swimsuit
Size 3-6 mo
$10.99 $6.59 40% off with code HOTDEAL
54% off estimated retail