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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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53 items
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    Old Navy Two Piece Swimsuit (view 2)Old Navy Two Piece Swimsuit (view 1)
    View Product: Old Navy Two Piece Swimsuit

    Old Navy

    Two Piece Swimsuit
    Size 10
    $9.99
    52% off estimated retail
    Kanu Surf One Piece Swimsuit (view 2)Kanu Surf One Piece Swimsuit (view 1)
    View Product: Kanu Surf One Piece Swimsuit

    Kanu Surf

    One Piece Swimsuit
    Size 14
    $15.99
    51% off estimated retail
    Ruffle Butts One Piece Swimsuit (view 2)Ruffle Butts One Piece Swimsuit (view 1)
    View Product: Ruffle Butts One Piece Swimsuit

    Ruffle Butts

    One Piece Swimsuit
    Size 18-24 mo
    $9.99 $11
    Cat & Jack One Piece Swimsuit (view 2)Cat & Jack One Piece Swimsuit (view 1)
    View Product: Cat & Jack One Piece Swimsuit

    Cat & Jack

    One Piece Swimsuit
    Size 2T
    $12.99
    23% off estimated retail
    The Edit. Forever Classic, Get perfectly polished in trousers, blazers, and more. Shop The Edit
    Cat & Jack One Piece Swimsuit (view 2)Cat & Jack One Piece Swimsuit (view 1)
    View Product: Cat & Jack One Piece Swimsuit

    Cat & Jack

    One Piece Swimsuit
    Size Medium youth
    $10.99
    35% off estimated retail
    Unbranded Swimsuit Cover Up (view 2)Unbranded Swimsuit Cover Up (view 1)
    View Product: Unbranded Swimsuit Cover Up

    Unbranded

    Swimsuit Cover Up
    Size X-Large youth
    $12.99
    60% off estimated retail
    Assorted Brands Two Piece Swimsuit (view 2)Assorted Brands Two Piece Swimsuit (view 1)
    View Product: Assorted Brands Two Piece Swimsuit

    Assorted Brands

    Two Piece Swimsuit
    Size 14
    $14.99
    54% off estimated retail
    Assorted Brands Rash Guard (view 2)Assorted Brands Rash Guard (view 1)
    View Product: Assorted Brands Rash Guard

    Assorted Brands

    Rash Guard
    Size 2T
    $12.99
    40% off estimated retail
    Cat & Jack One Piece Swimsuit (view 2)Cat & Jack One Piece Swimsuit (view 1)
    View Product: Cat & Jack One Piece Swimsuit

    Cat & Jack

    One Piece Swimsuit
    Size 3T
    $9.99
    41% off estimated retail
    Hanna Andersson Rash Guard (view 2)Hanna Andersson Rash Guard (view 1)
    View Product: Hanna Andersson Rash Guard

    Hanna Andersson

    Rash Guard
    Size 110 cm
    $32.99
    34% off estimated retail
    Unbranded Swimsuit Cover Up (view 2)Unbranded Swimsuit Cover Up (view 1)
    View Product: Unbranded Swimsuit Cover Up

    Unbranded

    Swimsuit Cover Up
    Size Medium kids
    $15.99 $11.99 25% off with code HOTDEAL
    40% off estimated retail
    Tea Rash Guard (view 2)Tea Rash Guard (view 1)
    View Product: Tea Rash Guard

    Tea

    Rash Guard
    Size 18-24 mo
    $16.99 $12.74 25% off with code HOTDEAL
    48% off estimated retail
    Wetsuit Club by Candlesticks Rash Guard (view 2)Wetsuit Club by Candlesticks Rash Guard (view 1)
    View Product: Wetsuit Club by Candlesticks Rash Guard

    Wetsuit Club by Candlesticks

    Rash Guard
    Size 18 mo
    $8.99 $7.19 20% off with code HOTDEAL
    50% off estimated retail
    Justice One Piece Swimsuit (view 2)Justice One Piece Swimsuit (view 1)
    View Product: Justice One Piece Swimsuit

    Justice

    One Piece Swimsuit
    Size 5
    $20.99 $14.69 30% off with code HOTDEAL
    51% off estimated retail
    Unbranded Rash Guard (view 2)Unbranded Rash Guard (view 1)
    View Product: Unbranded Rash Guard

    Unbranded

    Rash Guard
    Size Medium youth
    $10.99 $8.79 20% off with code HOTDEAL
    69% off estimated retail
    Disney Baby Wetsuit (view 2)Disney Baby Wetsuit (view 1)
    View Product: Disney Baby Wetsuit

    Disney Baby

    Wetsuit
    Size 0-3 mo
    $11.99 $9.59 20% off with code HOTDEAL
    54% off estimated retail
    Justice One Piece Swimsuit (view 2)Justice One Piece Swimsuit (view 1)
    View Product: Justice One Piece Swimsuit

    Justice

    One Piece Swimsuit
    Size 7
    $27.99 $19.59 30% off with code HOTDEAL
    34% off estimated retail
    Cabana Life Two Piece Swimsuit (view 2)Cabana Life Two Piece Swimsuit (view 1)
    View Product: Cabana Life Two Piece Swimsuit

    Cabana Life

    Two Piece Swimsuit
    Size 6X
    $30.99 $20.14 35% off with code HOTDEAL
    58% off estimated retail
    Venus Rash Guard (view 2)Venus Rash Guard (view 1)
    View Product: Venus Rash Guard

    Venus

    Rash Guard
    Size 12
    $8.99 $7.19 20% off with code HOTDEAL
    50% off estimated retail
    Floatimini One Piece Swimsuit (view 2)Floatimini One Piece Swimsuit (view 1)
    View Product: Floatimini One Piece Swimsuit

    Floatimini

    One Piece Swimsuit
    Size 3T
    $22.99 $16.09 30% off with code HOTDEAL
    72% off estimated retail
    Assorted Brands Rash Guard (view 2)Assorted Brands Rash Guard (view 1)
    View Product: Assorted Brands Rash Guard

    Assorted Brands

    Rash Guard
    Size Small kids
    $14.99 $11.24 25% off with code HOTDEAL
    48% off estimated retail
    Cat & Jack One Piece Swimsuit (view 2)Cat & Jack One Piece Swimsuit (view 1)
    View Product: Cat & Jack One Piece Swimsuit

    Cat & Jack

    One Piece Swimsuit
    Size 6X
    $15.99 $12.79 20% off with code HOTDEAL
    23% off estimated retail
    Janie and Jack Rash Guard (view 2)Janie and Jack Rash Guard (view 1)
    View Product: Janie and Jack Rash Guard

    Janie and Jack

    Rash Guard
    Size 3 mo
    $11.99 $9.59 20% off with code HOTDEAL
    67% off estimated retail
    Weissman Designs for Dance One Piece Swimsuit (view 2)Weissman Designs for Dance One Piece Swimsuit (view 1)
    View Product: Weissman Designs for Dance One Piece Swimsuit

    Weissman Designs for Dance

    One Piece Swimsuit
    Size X-Large kids
    $15.99 $11.99 25% off with code HOTDEAL
    48% off estimated retail
    SO Swimsuit Cover Up (view 2)SO Swimsuit Cover Up (view 1)
    View Product: SO Swimsuit Cover Up

    SO

    Swimsuit Cover Up
    Size 10
    $10.99 $8.79 20% off with code HOTDEAL
    60% off estimated retail
    Unbranded Two Piece Swimsuit (view 2)Unbranded Two Piece Swimsuit (view 1)
    View Product: Unbranded Two Piece Swimsuit

    Unbranded

    Two Piece Swimsuit
    Size X-Small kids
    $14.99 $11.99 20% off with code HOTDEAL
    48% off estimated retail
    Baby Gap One Piece Swimsuit (view 2)Baby Gap One Piece Swimsuit (view 1)
    View 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 retail
    Lands' End Rash Guard (view 2)Lands' End Rash Guard (view 1)
    View Product: Lands' End Rash Guard

    Lands' End

    Rash Guard
    Size 14
    $31.99 $20.79 35% off with code HOTDEAL
    70% off estimated retail
    Cat & Jack Swimsuit Cover Up (view 2)Cat & Jack Swimsuit Cover Up (view 1)Price Drop
    View Product: Cat & Jack Swimsuit Cover Up

    Cat & Jack

    Swimsuit Cover Up
    Size 5
    $13.99 $11.19 20% off with code HOTDEAL
    29% off estimated retail
    Sunshine Swing Rash Guard (view 2)Sunshine Swing Rash Guard (view 1)Price Drop
    View Product: Sunshine Swing Rash Guard

    Sunshine Swing

    Rash Guard
    Size 14
    $15.99 $12.79 20% off with code HOTDEAL
    48% off estimated retail
    Lands' End Swimsuit Cover Up (view 2)Lands' End Swimsuit Cover Up (view 1)
    View Product: Lands' End Swimsuit Cover Up

    Lands' End

    Swimsuit Cover Up
    Size 6
    $34.99 $17.50 50% off with code HOTDEAL
    18% off estimated retail
    Cat & Jack One Piece Swimsuit (view 2)Cat & Jack One Piece Swimsuit (view 1)
    View Product: Cat & Jack One Piece Swimsuit

    Cat & Jack

    One Piece Swimsuit
    Size 6-9 mo
    $12.99 $8.44 35% off with code HOTDEAL
    35% off estimated retail
    Big Chill Rash Guard (view 2)Big Chill Rash Guard (view 1)
    View Product: Big Chill Rash Guard

    Big Chill

    Rash Guard
    Size 8
    $13.99 $9.09 35% off with code HOTDEAL
    25% off estimated retail
    Garnet Hill Rash Guard (view 2)Garnet Hill Rash Guard (view 1)Price Drop
    View Product: Garnet Hill Rash Guard

    Garnet Hill

    Rash Guard
    Size 6
    $20.99 $12.59 40% off with code HOTDEAL
    45% off estimated retail
    The Children's Place One Piece Swimsuit (view 2)The Children's Place One Piece Swimsuit (view 1)Price Drop
    View 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 retail
    xcel Rash Guard (view 2)xcel Rash Guard (view 1)Price Drop
    View Product: xcel Rash Guard

    xcel

    Rash Guard
    Size 12
    $24.99 $13.74 45% off with code HOTDEAL
    59% off estimated retail
    Adidas Rash Guard (view 2)Adidas Rash Guard (view 1)Price Drop
    View Product: Adidas Rash Guard

    Adidas

    Rash Guard
    Size 8
    $14.99 $8.99 40% off with code HOTDEAL
    70% off estimated retail
    SO Two Piece Swimsuit (view 2)SO Two Piece Swimsuit (view 1)Price Drop
    View Product: SO Two Piece Swimsuit

    SO

    Two Piece Swimsuit
    Size X-Large kids
    $11.99
    56% off estimated retail
    Lucky & Me Two Piece Swimsuit (view 2)Lucky & Me Two Piece Swimsuit (view 1)Price Drop
    View Product: Lucky & Me Two Piece Swimsuit

    Lucky & Me

    Two Piece Swimsuit
    Size 7
    $12.99
    45% off estimated retail
    Hanna Andersson Two Piece Swimsuit (view 2)Hanna Andersson Two Piece Swimsuit (view 1)Price Drop
    View Product: Hanna Andersson Two Piece Swimsuit

    Hanna Andersson

    Two Piece Swimsuit
    Size 120 cm
    $31.99
    36% off estimated retail
    KANU girl Rash Guard (view 2)KANU girl Rash Guard (view 1)Price Drop
    View Product: KANU girl Rash Guard

    KANU girl

    Rash Guard
    Size X-Small kids
    $10.99 $6.59 40% off with code HOTDEAL
    63% off estimated retail
    Marina West Rash Guard (view 2)Marina West Rash Guard (view 1)Price Drop
    View Product: Marina West Rash Guard

    Marina West

    Rash Guard
    Size 4
    $11.99 $7.19 40% off with code HOTDEAL
    50% off estimated retail
    Crown & Ivy One Piece Swimsuit (view 2)Crown & Ivy One Piece Swimsuit (view 1)Price Drop
    View 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 retail
    Cat & Jack Rash Guard (view 2)Cat & Jack Rash Guard (view 1)Price Drop
    View Product: Cat & Jack Rash Guard

    Cat & Jack

    Rash Guard
    Size Small kids
    $11.99 $7.19 40% off with code HOTDEAL
    50% off estimated retail
    Old Navy One Piece Swimsuit (view 2)Old Navy One Piece Swimsuit (view 1)Price Drop
    View 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 retail
    Unbranded One Piece Swimsuit (view 2)Unbranded One Piece Swimsuit (view 1)Price Drop
    View 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
    Cat & Jack One Piece Swimsuit (view 2)Cat & Jack One Piece Swimsuit (view 1)Price Drop
    View Product: Cat & Jack One Piece Swimsuit

    Cat & Jack

    One Piece Swimsuit
    Size 3-6 mo
    $11.99 $7.19 40% off with code HOTDEAL
    41% off estimated retail
    Harper Canyon One Piece Swimsuit (view 2)Harper Canyon One Piece Swimsuit (view 1)Price Drop
    View Product: Harper Canyon One Piece Swimsuit

    Harper Canyon

    One Piece Swimsuit
    Size 24 mo
    $7.99 $4.79 40% off with code HOTDEAL
    50% off estimated retail
    Hanna Andersson Rash Guard (view 2)Hanna Andersson Rash Guard (view 1)Price Drop
    View Product: Hanna Andersson Rash Guard

    Hanna Andersson

    Rash Guard
    Size 160 cm
    $16.24 $8.93 45% off with code HOTDEAL
    78% off estimated retail
    OshKosh B'gosh One Piece Swimsuit (view 2)OshKosh B'gosh One Piece Swimsuit (view 1)Price Drop
    View Product: OshKosh B'gosh One Piece Swimsuit

    OshKosh B'gosh

    One Piece Swimsuit
    Size 6 mo
    $12.24 $7.34 40% off with code HOTDEAL
    62% off estimated retail
    Cat & Jack One Piece Swimsuit (view 2)Cat & Jack One Piece Swimsuit (view 1)Price Drop
    View Product: Cat & Jack One Piece Swimsuit

    Cat & Jack

    One Piece Swimsuit
    Size 9 mo
    $11.24 $6.74 40% off with code HOTDEAL
    47% off estimated retail
    Helix Two Piece Swimsuit (view 2)Helix Two Piece Swimsuit (view 1)Price Drop
    View Product: Helix Two Piece Swimsuit

    Helix

    Two Piece Swimsuit
    Size 3-6 mo
    $10.24 $6.14 40% off with code HOTDEAL
    59% off estimated retail
    Cat & Jack One Piece Swimsuit (view 2)Cat & Jack One Piece Swimsuit (view 1)
    View Product: Cat & Jack One Piece Swimsuit

    Cat & Jack

    One Piece Swimsuit
    Size 18 mo
    $10.99 $6.59 40% off with code HOTDEAL
    18% off estimated retail
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