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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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    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 5
    $10.99
    59% off estimated retail
    OshKosh B'gosh One Piece Swimsuit (view 2)OshKosh B'gosh One Piece Swimsuit (view 1)
    View Product: OshKosh B'gosh One Piece Swimsuit

    OshKosh B'gosh

    One Piece Swimsuit
    Size 24 mo
    $9.99
    58% off estimated retail
    IEFIEL Rash Guard (view 2)IEFIEL Rash Guard (view 1)
    View Product: IEFIEL Rash Guard

    IEFIEL

    Rash Guard
    Size 8
    $9.99 $7.99 20% off with code SHINE
    37% off estimated retail
    Old Navy One Piece Swimsuit (view 2)Old Navy One Piece Swimsuit (view 1)
    View Product: Old Navy One Piece Swimsuit

    Old Navy

    One Piece Swimsuit
    Size 3T
    $11.99 $8.99 25% off with code SHINE
    33% off estimated retail
    The Edit. Forever Classic, Get perfectly polished in trousers, blazers, and more. Shop The Edit
    Cat & Jack Rash Guard (view 2)Cat & Jack Rash Guard (view 1)
    View Product: Cat & Jack Rash Guard

    Cat & Jack

    Rash Guard
    Size 4
    $8.99 $7.19 20% off with code SHINE
    25% off estimated retail
    Tommy Hilfiger One Piece Swimsuit (view 2)Tommy Hilfiger One Piece Swimsuit (view 1)
    View Product: Tommy Hilfiger One Piece Swimsuit

    Tommy Hilfiger

    One Piece Swimsuit
    Size 3T
    $9.99 $7.99 20% off with code SHINE
    70% off estimated retail
    Carter's Rash Guard (view 2)Carter's Rash Guard (view 1)
    View Product: Carter's Rash Guard

    Carter's

    Rash Guard
    Size 4T
    $10.99 $8.79 20% off with code SHINE
    63% off estimated retail
    Cat & Jack Rash Guard (view 2)Cat & Jack Rash Guard (view 1)
    View Product: Cat & Jack Rash Guard

    Cat & Jack

    Rash Guard
    Size 18 mo
    $8.99 $7.19 20% off with code SHINE
    25% off estimated retail
    Max Grey One Piece Swimsuit (view 2)Max Grey One Piece Swimsuit (view 1)
    View Product: Max Grey One Piece Swimsuit

    Max Grey

    One Piece Swimsuit
    Size 12
    $10.99 $8.79 20% off with code SHINE
    31% off estimated retail
    B.wear One Piece Swimsuit (view 2)B.wear One Piece Swimsuit (view 1)
    View Product: B.wear One Piece Swimsuit

    B.wear

    One Piece Swimsuit
    Size 5
    $7.99 $6.39 20% off with code SHINE
    42% off estimated retail
    Janie and Jack Board Shorts (view 2)Janie and Jack Board Shorts (view 1)
    View Product: Janie and Jack Board Shorts

    Janie and Jack

    Board Shorts
    Size 4
    $10.99 $8.24 25% off with code SHINE
    52% off estimated retail
    Name It Two Piece Swimsuit (view 2)Name It Two Piece Swimsuit (view 1)
    View Product: Name It Two Piece Swimsuit

    Name It

    Two Piece Swimsuit
    Size 12 mo
    $9.99 $7.99 20% off with code SHINE
    60% off estimated retail
    BMG One Piece Swimsuit (view 2)BMG One Piece Swimsuit (view 1)
    View Product: BMG One Piece Swimsuit

    BMG

    One Piece Swimsuit
    Size 7
    $10.99 $8.24 25% off with code SHINE
    66% off estimated retail
    Old Navy Board Shorts (view 2)Old Navy Board Shorts (view 1)
    View Product: Old Navy Board Shorts

    Old Navy

    Board Shorts
    Size 5T
    $6.99 $5.59 20% off with code SHINE
    50% off estimated retail
    Carter's Rash Guard (view 2)Carter's Rash Guard (view 1)
    View Product: Carter's Rash Guard

    Carter's

    Rash Guard
    Size 12
    $11.99 $9.59 20% off with code SHINE
    60% off estimated retail
    Assorted Brands One Piece Swimsuit (view 2)Assorted Brands One Piece Swimsuit (view 1)
    View Product: Assorted Brands One Piece Swimsuit

    Assorted Brands

    One Piece Swimsuit
    Size X-Large kids
    $11.99 $9.59 20% off with code SHINE
    63% 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 18 mo
    $7.99 $6.39 20% off with code SHINE
    53% off estimated retail
    Carter's One Piece Swimsuit (view 2)Carter's One Piece Swimsuit (view 1)
    View Product: Carter's One Piece Swimsuit

    Carter's

    One Piece Swimsuit
    Size 6 mo
    $10.99 $8.79 20% off with code SHINE
    63% off estimated retail
    Unbranded One Piece Swimsuit (view 2)Unbranded One Piece Swimsuit (view 1)
    View Product: Unbranded One Piece Swimsuit

    Unbranded

    One Piece Swimsuit
    Size 6-9 mo
    $9.99 $7.99 20% off with code SHINE
    54% 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 12-18 mo
    $10.99 $8.79 20% off with code SHINE
    38% off estimated retail
    Janie and Jack Board Shorts (view 2)Janie and Jack Board Shorts (view 1)Price Drop
    View Product: Janie and Jack Board Shorts

    Janie and Jack

    Board Shorts
    Size 5
    $11.99 $8.39 30% off with code SHINE
    47% off estimated retail
    Jessica Simpson One Piece Swimsuit (view 2)Jessica Simpson One Piece Swimsuit (view 1)
    View Product: Jessica Simpson One Piece Swimsuit

    Jessica Simpson

    One Piece Swimsuit
    Size 12 mo
    $10.99 $8.79 20% off with code SHINE
    31% off estimated retail
    SunAlert One Piece Swimsuit (view 2)SunAlert One Piece Swimsuit (view 1)
    View Product: SunAlert One Piece Swimsuit

    SunAlert

    One Piece Swimsuit
    Size Medium infants
    $6.99 $5.59 20% off with code SHINE
    36% off estimated retail
    TYR One Piece Swimsuit (view 2)TYR One Piece Swimsuit (view 1)Price Drop
    View Product: TYR One Piece Swimsuit

    TYR

    One Piece Swimsuit
    Size Large infants
    $11.99 $8.99 25% off with code SHINE
    45% off estimated retail
    Le Top One Piece Swimsuit (view 2)Le Top One Piece Swimsuit (view 1)Price Drop
    View Product: Le Top One Piece Swimsuit

    Le Top

    One Piece Swimsuit
    Size 3 mo
    $9.99 $7.99 20% off with code SHINE
    44% off estimated retail
    H&M One Piece Swimsuit (view 2)H&M One Piece Swimsuit (view 1)Price Drop
    View Product: H&M One Piece Swimsuit

    H&M

    One Piece Swimsuit
    Size 6-12 mo
    $10.99 $8.79 20% off with code SHINE
    31% off estimated retail
    Tommy Bahama One Piece Swimsuit (view 2)Tommy Bahama One Piece Swimsuit (view 1)Price Drop
    View Product: Tommy Bahama One Piece Swimsuit

    Tommy Bahama

    One Piece Swimsuit
    Size 12 mo
    $8.99 $7.19 20% off with code SHINE
    66% off estimated retail
    Koala Baby Wetsuit (view 2)Koala Baby Wetsuit (view 1)Price Drop
    View Product: Koala Baby Wetsuit

    Koala Baby

    Wetsuit
    Size 6-9 mo
    $10.99 $8.79 20% off with code SHINE
    50% off estimated retail
    Assorted Brands One Piece Swimsuit (view 2)Assorted Brands One Piece Swimsuit (view 1)Price Drop
    View Product: Assorted Brands One Piece Swimsuit

    Assorted Brands

    One Piece Swimsuit
    Size X-Small kids
    $10.99 $8.79 20% off with code SHINE
    59% 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 6 mo
    $10.99 $7.69 30% off with code SHINE
    73% off estimated retail
    Azul Swimwear One Piece Swimsuit (view 2)Azul Swimwear One Piece Swimsuit (view 1)Price Drop
    View Product: Azul Swimwear One Piece Swimsuit

    Azul Swimwear

    One Piece Swimsuit
    Size 18 mo
    $9.99 $7.99 20% off with code SHINE
    54% off estimated retail
    Assorted Brands One Piece Swimsuit (view 2)Assorted Brands One Piece Swimsuit (view 1)Price Drop
    View Product: Assorted Brands One Piece Swimsuit

    Assorted Brands

    One Piece Swimsuit
    Size 6
    $9.99 $7.99 20% off with code SHINE
    69% off estimated retail
    Carter's One Piece Swimsuit (view 2)Carter's One Piece Swimsuit (view 1)Price Drop
    View Product: Carter's One Piece Swimsuit

    Carter's

    One Piece Swimsuit
    Size 3 mo
    $8.99 $7.19 20% off with code SHINE
    70% off estimated retail
    Disney One Piece Swimsuit (view 2)Disney One Piece Swimsuit (view 1)Price Drop
    View Product: Disney One Piece Swimsuit

    Disney

    One Piece Swimsuit
    Size 12 mo
    $8.99 $7.19 20% off with code SHINE
    57% 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 18 mo
    $9.99 $7.99 20% off with code SHINE
    41% 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
    $8.99 $7.19 20% off with code SHINE
    62% off estimated retail
    Flapdoodles One Piece Swimsuit (view 2)Flapdoodles One Piece Swimsuit (view 1)Price Drop
    View Product: Flapdoodles One Piece Swimsuit

    Flapdoodles

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

    Old Navy

    Rash Guard
    Size 6-12 mo
    $8.99 $7.19 20% off with code SHINE
    35% 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 12 mo
    $9.99 $7.99 20% off with code SHINE
    41% 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
    $8.99 $7.19 20% off with code SHINE
    50% off estimated retail
    Carter's One Piece Swimsuit (view 2)Carter's One Piece Swimsuit (view 1)Price Drop
    View Product: Carter's One Piece Swimsuit

    Carter's

    One Piece Swimsuit
    Size Newborn
    $9.99 $7.99 20% off with code SHINE
    66% off estimated retail
    Assorted Brands Rash Guard (view 2)Assorted Brands Rash Guard (view 1)Price Drop
    View Product: Assorted Brands Rash Guard

    Assorted Brands

    Rash Guard
    Size 12 mo
    $8.99 $7.19 20% off with code SHINE
    59% 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 24 mo
    $8.99 $7.19 20% off with code SHINE
    62% off estimated retail
    Carter's Rash Guard (view 2)Carter's Rash Guard (view 1)Price Drop
    View Product: Carter's Rash Guard

    Carter's

    Rash Guard
    Size 12 mo
    $8.99 $7.19 20% off with code SHINE
    65% off estimated retail
    Gymboree One Piece Swimsuit (view 2)Gymboree One Piece Swimsuit (view 1)Price Drop
    View Product: Gymboree One Piece Swimsuit

    Gymboree

    One Piece Swimsuit
    Size 12-18 mo
    $8.99 $7.19 20% off with code SHINE
    64% off estimated retail
    Planet Sea Swimsuit Cover Up (view 2)Planet Sea Swimsuit Cover Up (view 1)Price Drop
    View Product: Planet Sea Swimsuit Cover Up

    Planet Sea

    Swimsuit Cover Up
    Size 6
    $8.99 $7.19 20% off with code SHINE
    60% off estimated retail
    Baby Gap One Piece Swimsuit (view 2)Baby Gap One Piece Swimsuit (view 1)Price Drop
    View Product: Baby Gap One Piece Swimsuit

    Baby Gap

    One Piece Swimsuit
    Size 3-6 mo
    $6.99 $5.59 20% off with code SHINE
    72% off estimated retail
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