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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.

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47 items
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    Roxy One Piece Swimsuit (view 2)Roxy One Piece Swimsuit (view 1)New With Tags
    View Product: Roxy One Piece Swimsuit

    Roxy

    One Piece Swimsuit
    Size Large kids
    $22.99 $14.94 35% off with code GONOW
    54% off estimated retail
    TYR One Piece Swimsuit (view 2)TYR One Piece Swimsuit (view 1)New With Tags
    View Product: TYR One Piece Swimsuit

    TYR

    One Piece Swimsuit
    Size Small youth
    $30.99 $20.14 35% off with code GONOW
    65% off estimated retail
    Speedo One Piece Swimsuit (view 2)Speedo One Piece Swimsuit (view 1)New With Tags
    View Product: Speedo One Piece Swimsuit

    Speedo

    One Piece Swimsuit
    Size Small youth
    $29.99 $19.49 35% off with code GONOW
    48% off estimated retail
    Wear Moi One Piece Swimsuit (view 2)Wear Moi One Piece Swimsuit (view 1)New With Tags
    View Product: Wear Moi One Piece Swimsuit

    Wear Moi

    One Piece Swimsuit
    Size 8
    $17.99 $11.69 35% off with code GONOW
    70% off estimated retail
    The Edit. Forever Classic, Get perfectly polished in trousers, blazers, and more. Shop The Edit
    Crewcuts Outlet One Piece Swimsuit (view 2)Crewcuts Outlet One Piece Swimsuit (view 1)New With Tags
    View Product: Crewcuts Outlet One Piece Swimsuit

    Crewcuts Outlet

    One Piece Swimsuit
    Size 4
    $28.99 $18.84 35% off with code GONOW
    55% off estimated retail
    Little Me One Piece Swimsuit (view 2)Little Me One Piece Swimsuit (view 1)New With Tags
    View Product: Little Me One Piece Swimsuit

    Little Me

    One Piece Swimsuit
    Size 12 mo
    $7.99 $5.19 35% off with code GONOW
    50% off estimated retail
    L.L.Bean One Piece Swimsuit (view 2)L.L.Bean One Piece Swimsuit (view 1)New With Tags
    View Product: L.L.Bean One Piece Swimsuit

    L.L.Bean

    One Piece Swimsuit
    Size 16
    $12.99 $8.44 35% off with code GONOW
    60% off estimated retail
    Assorted Brands One Piece Swimsuit (view 2)Assorted Brands One Piece Swimsuit (view 1)New With Tags
    View Product: Assorted Brands One Piece Swimsuit

    Assorted Brands

    One Piece Swimsuit
    Size 18-24 mo
    $13.99 $9.09 35% off with code GONOW
    41% off estimated retail
    Gap Kids One Piece Swimsuit (view 2)Gap Kids One Piece Swimsuit (view 1)New With Tags
    View Product: Gap Kids One Piece Swimsuit

    Gap Kids

    One Piece Swimsuit
    Size 2X-large kids
    $15.99 $10.39 35% off with code GONOW
    62% off estimated retail
    Assorted Brands One Piece Swimsuit (view 2)Assorted Brands One Piece Swimsuit (view 1)New With Tags
    View Product: Assorted Brands One Piece Swimsuit

    Assorted Brands

    One Piece Swimsuit
    Size 6
    $11.99 $7.79 35% off with code GONOW
    63% off estimated retail
    Stella Cove One Piece Swimsuit (view 2)Stella Cove One Piece Swimsuit (view 1)New With Tags
    View Product: Stella Cove One Piece Swimsuit

    Stella Cove

    One Piece Swimsuit
    Size 10
    $19.99 $12.99 35% off with code GONOW
    61% off estimated retail
    Banana Cabana One Piece Swimsuit (view 2)Banana Cabana One Piece Swimsuit (view 1)New With Tags
    View Product: Banana Cabana One Piece Swimsuit

    Banana Cabana

    One Piece Swimsuit
    Size 2T
    $9.99 $6.49 35% off with code GONOW
    50% off estimated retail
    Baby Gap One Piece Swimsuit (view 2)Baby Gap One Piece Swimsuit (view 1)New With Tags
    View Product: Baby Gap One Piece Swimsuit

    Baby Gap

    One Piece Swimsuit
    Size 3T
    $9.99 $6.49 35% off with code GONOW
    63% off estimated retail
    Penelope Mack One Piece Swimsuit (view 2)Penelope Mack One Piece Swimsuit (view 1)New With Tags
    View Product: Penelope Mack One Piece Swimsuit

    Penelope Mack

    One Piece Swimsuit
    Size 6X
    $10.99 $7.14 35% off with code GONOW
    66% off estimated retail
    Art Class One Piece Swimsuit (view 2)Art Class One Piece Swimsuit (view 1)New With Tags
    View Product: Art Class One Piece Swimsuit

    Art Class

    One Piece Swimsuit
    Size 14 Plus
    $13.99 $9.09 35% off with code GONOW
    30% off estimated retail
    The Finals One Piece Swimsuit (view 2)The Finals One Piece Swimsuit (view 1)New With Tags
    View Product: The Finals One Piece Swimsuit

    The Finals

    One Piece Swimsuit
    Size 20
    $18.99 $12.34 35% off with code GONOW
    63% off estimated retail
    Old Navy One Piece Swimsuit (view 2)Old Navy One Piece Swimsuit (view 1)New With Tags
    View Product: Old Navy One Piece Swimsuit

    Old Navy

    One Piece Swimsuit
    Size 0-3 mo
    $10.99 $7.14 35% off with code GONOW
    52% off estimated retail
    Copper Key One Piece Swimsuit (view 2)Copper Key One Piece Swimsuit (view 1)New With Tags
    View Product: Copper Key One Piece Swimsuit

    Copper Key

    One Piece Swimsuit
    Size 16
    $19.99 $12.99 35% off with code GONOW
    50% off estimated retail
    Heart and Harmony One Piece Swimsuit (view 2)Heart and Harmony One Piece Swimsuit (view 1)New With Tags
    View Product: Heart and Harmony One Piece Swimsuit

    Heart and Harmony

    One Piece Swimsuit
    Size 12
    $24.99 $16.24 35% off with code GONOW
    24% off estimated retail
    Koala Kids One Piece Swimsuit (view 2)Koala Kids One Piece Swimsuit (view 1)New With Tags
    View Product: Koala Kids One Piece Swimsuit

    Koala Kids

    One Piece Swimsuit
    Size 18 mo
    $11.99 $7.79 35% off with code GONOW
    20% off estimated retail
    Azul Swimwear One Piece Swimsuit (view 2)Azul Swimwear One Piece Swimsuit (view 1)New With Tags
    View Product: Azul Swimwear One Piece Swimsuit

    Azul Swimwear

    One Piece Swimsuit
    Size 24 mo
    $12.99 $8.44 35% off with code GONOW
    40% off estimated retail
    Little Me One Piece Swimsuit (view 2)Little Me One Piece Swimsuit (view 1)New With Tags
    View Product: Little Me One Piece Swimsuit

    Little Me

    One Piece Swimsuit
    Size 18 mo
    $13.99 $9.09 35% off with code GONOW
    52% off estimated retail
    OshKosh B'gosh One Piece Swimsuit (view 2)OshKosh B'gosh One Piece Swimsuit (view 1)New With Tags
    View Product: OshKosh B'gosh One Piece Swimsuit

    OshKosh B'gosh

    One Piece Swimsuit
    Size 18 mo
    $8.99 $5.84 35% off with code GONOW
    70% off estimated retail
    Nicole Miller New York One Piece Swimsuit (view 2)Nicole Miller New York One Piece Swimsuit (view 1)New With Tags
    View Product: Nicole Miller New York One Piece Swimsuit

    Nicole Miller New York

    One Piece Swimsuit
    Size 18 mo
    $10.99 $7.14 35% off with code GONOW
    67% off estimated retail
    Unbranded One Piece Swimsuit (view 2)Unbranded One Piece Swimsuit (view 1)New With Tags
    View Product: Unbranded One Piece Swimsuit

    Unbranded

    One Piece Swimsuit
    Size 150 cm
    $14.99 $9.74 35% off with code GONOW
    54% off estimated retail
    Speedo One Piece Swimsuit (view 2)Speedo One Piece Swimsuit (view 1)New With Tags
    View Product: Speedo One Piece Swimsuit

    Speedo

    One Piece Swimsuit
    Size X-Large youth
    $18.99 $12.34 35% off with code GONOW
    24% off estimated retail
    Kanu Surf One Piece Swimsuit (view 2)Kanu Surf One Piece Swimsuit (view 1)New With Tags
    View Product: Kanu Surf One Piece Swimsuit

    Kanu Surf

    One Piece Swimsuit
    Size 18 mo
    $9.99 $6.49 35% off with code GONOW
    54% off estimated retail
    Zella One Piece Swimsuit (view 2)Zella One Piece Swimsuit (view 1)New With Tags
    View Product: Zella One Piece Swimsuit

    Zella

    One Piece Swimsuit
    Size 10
    $26.99 $17.54 35% off with code GONOW
    44% off estimated retail
    Cat & Jack One Piece Swimsuit (view 2)Cat & Jack One Piece Swimsuit (view 1)New With Tags
    View Product: Cat & Jack One Piece Swimsuit

    Cat & Jack

    One Piece Swimsuit
    Size 14 Plus
    $12.99 $8.44 35% off with code GONOW
    23% off estimated retail
    Wonder Nation One Piece Swimsuit (view 2)Wonder Nation One Piece Swimsuit (view 1)New With Tags
    View Product: Wonder Nation One Piece Swimsuit

    Wonder Nation

    One Piece Swimsuit
    Size 0-3 mo
    $7.99 $5.19 35% off with code GONOW
    27% off estimated retail
    Wonder Nation One Piece Swimsuit (view 2)Wonder Nation One Piece Swimsuit (view 1)New With Tags
    View Product: Wonder Nation One Piece Swimsuit

    Wonder Nation

    One Piece Swimsuit
    Size 6-9 mo
    $9.99 $6.49 35% off with code GONOW
    $11
    Wonder Nation One Piece Swimsuit (view 2)Wonder Nation One Piece Swimsuit (view 1)New With Tags
    View Product: Wonder Nation One Piece Swimsuit

    Wonder Nation

    One Piece Swimsuit
    Size 0-3 mo
    $7.99 $5.19 35% off with code GONOW
    27% off estimated retail
    Wonder Nation One Piece Swimsuit (view 2)Wonder Nation One Piece Swimsuit (view 1)New With Tags
    View Product: Wonder Nation One Piece Swimsuit

    Wonder Nation

    One Piece Swimsuit
    Size 3-6 mo
    $7.99 $5.19 35% off with code GONOW
    27% off estimated retail
    Wonder Nation One Piece Swimsuit (view 2)Wonder Nation One Piece Swimsuit (view 1)New With Tags
    View Product: Wonder Nation One Piece Swimsuit

    Wonder Nation

    One Piece Swimsuit
    Size 3-6 mo
    $7.99 $5.19 35% off with code GONOW
    27% off estimated retail
    Wonder Nation One Piece Swimsuit (view 2)Wonder Nation One Piece Swimsuit (view 1)New With Tags
    View Product: Wonder Nation One Piece Swimsuit

    Wonder Nation

    One Piece Swimsuit
    Size 6-9 mo
    $7.99 $5.19 35% off with code GONOW
    27% off estimated retail
    Wonder Nation One Piece Swimsuit (view 2)Wonder Nation One Piece Swimsuit (view 1)New With Tags
    View Product: Wonder Nation One Piece Swimsuit

    Wonder Nation

    One Piece Swimsuit
    Size 6-9 mo
    $9.99 $6.49 35% off with code GONOW
    $11
    Wonder Nation One Piece Swimsuit (view 2)Wonder Nation One Piece Swimsuit (view 1)New With Tags
    View Product: Wonder Nation One Piece Swimsuit

    Wonder Nation

    One Piece Swimsuit
    Size 3-6 mo
    $7.99 $5.19 35% off with code GONOW
    27% off estimated retail
    Wonder Nation One Piece Swimsuit (view 2)Wonder Nation One Piece Swimsuit (view 1)New With Tags
    View Product: Wonder Nation One Piece Swimsuit

    Wonder Nation

    One Piece Swimsuit
    Size 3-6 mo
    $7.99 $5.19 35% off with code GONOW
    27% off estimated retail
    Wonder Nation One Piece Swimsuit (view 2)Wonder Nation One Piece Swimsuit (view 1)New With Tags
    View Product: Wonder Nation One Piece Swimsuit

    Wonder Nation

    One Piece Swimsuit
    Size 0-3 mo
    $7.99 $5.19 35% off with code GONOW
    27% off estimated retail
    Wonder Nation One Piece Swimsuit (view 2)Wonder Nation One Piece Swimsuit (view 1)New With Tags
    View Product: Wonder Nation One Piece Swimsuit

    Wonder Nation

    One Piece Swimsuit
    Size 3-6 mo
    $7.99 $5.19 35% off with code GONOW
    27% off estimated retail
    Wonder Nation One Piece Swimsuit (view 2)Wonder Nation One Piece Swimsuit (view 1)New With Tags
    View Product: Wonder Nation One Piece Swimsuit

    Wonder Nation

    One Piece Swimsuit
    Size 0-3 mo
    $7.99 $5.19 35% off with code GONOW
    27% off estimated retail
    Wonder Nation One Piece Swimsuit (view 2)Wonder Nation One Piece Swimsuit (view 1)New With Tags
    View Product: Wonder Nation One Piece Swimsuit

    Wonder Nation

    One Piece Swimsuit
    Size 0-3 mo
    $7.99 $5.19 35% off with code GONOW
    27% off estimated retail
    Wonder Nation One Piece Swimsuit (view 2)Wonder Nation One Piece Swimsuit (view 1)New With Tags
    View Product: Wonder Nation One Piece Swimsuit

    Wonder Nation

    One Piece Swimsuit
    Size 0-3 mo
    $10.99 $7.14 35% off with code GONOW
    $11
    Profile Varsity One Piece Swimsuit (view 2)Profile Varsity One Piece Swimsuit (view 1)New With Tags
    View Product: Profile Varsity One Piece Swimsuit

    Profile Varsity

    One Piece Swimsuit
    Size 6
    $11.99 $7.79 35% off with code GONOW
    25% off estimated retail
    Shade Critters One Piece Swimsuit (view 2)Shade Critters One Piece Swimsuit (view 1)New With Tags
    View Product: Shade Critters One Piece Swimsuit

    Shade Critters

    One Piece Swimsuit
    Size 14
    $27.99 $18.19 35% off with code GONOW
    67% off estimated retail
    Unbranded One Piece Swimsuit (view 2)Unbranded One Piece Swimsuit (view 1)New With Tags
    View Product: Unbranded One Piece Swimsuit

    Unbranded

    One Piece Swimsuit
    Size 100 cm
    $12.99 $8.44 35% off with code GONOW
    51% off estimated retail
    Pehr One Piece Swimsuit (view 2)Pehr One Piece Swimsuit (view 1)New With Tags
    View Product: Pehr One Piece Swimsuit

    Pehr

    One Piece Swimsuit
    Size 12 mo
    $10.99 $7.14 35% off with code GONOW
    59% off estimated retail
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