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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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37 items
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    LoveShackFancy One Piece Swimsuit (view 2)LoveShackFancy One Piece Swimsuit (view 1)
    View Product: LoveShackFancy One Piece Swimsuit

    LoveShackFancy

    One Piece Swimsuit
    Size 4
    $73.99
    62% off estimated retail
    Nickelodeon One Piece Swimsuit (view 2)Nickelodeon One Piece Swimsuit (view 1)
    View Product: Nickelodeon One Piece Swimsuit

    Nickelodeon

    One Piece Swimsuit
    Size 4
    $9.99
    50% 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 4
    $14.99
    44% off estimated retail
    Speedo One Piece Swimsuit (view 2)Speedo One Piece Swimsuit (view 1)
    View Product: Speedo One Piece Swimsuit

    Speedo

    One Piece Swimsuit
    Size 4
    $14.99
    25% off estimated retail
    The Edit. Forever Classic, Get perfectly polished in trousers, blazers, and more. Shop The Edit
    Disney Two Piece Swimsuit (view 2)Disney Two Piece Swimsuit (view 1)
    View Product: Disney Two Piece Swimsuit

    Disney

    Two Piece Swimsuit
    Size 4
    $11.99
    14% off estimated retail
    Gap Kids Board Shorts (view 2)Gap Kids Board Shorts (view 1)
    View Product: Gap Kids Board Shorts

    Gap Kids

    Board Shorts
    Size 4
    $21.99 $16.49 25% off with code HOTDEAL
    43% off estimated retail
    Lands' End One Piece Swimsuit (view 2)Lands' End One Piece Swimsuit (view 1)
    View Product: Lands' End One Piece Swimsuit

    Lands' End

    One Piece Swimsuit
    Size 4
    $24.99 $18.74 25% off with code HOTDEAL
    44% 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 4
    $14.99 $11.24 25% off with code HOTDEAL
    44% off estimated retail
    DSG One Piece Swimsuit (view 2)DSG One Piece Swimsuit (view 1)
    View Product: DSG One Piece Swimsuit

    DSG

    One Piece Swimsuit
    Size 4
    $11.99 $9.59 20% off with code HOTDEAL
    59% off estimated retail
    Wonder Nation Two Piece Swimsuit (view 2)Wonder Nation Two Piece Swimsuit (view 1)
    View Product: Wonder Nation Two Piece Swimsuit

    Wonder Nation

    Two Piece Swimsuit
    Size 4
    $10.99 $8.79 20% off with code HOTDEAL
    35% 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 4
    $14.99 $11.99 20% off with code HOTDEAL
    48% off estimated retail
    TYR One Piece Swimsuit (view 2)TYR One Piece Swimsuit (view 1)
    View Product: TYR One Piece Swimsuit

    TYR

    One Piece Swimsuit
    Size 4
    $11.99 $9.59 20% off with code HOTDEAL
    59% 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 4
    $17.99 $14.39 20% off with code HOTDEAL
    37% 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 4
    $12.99 $10.39 20% off with code HOTDEAL
    55% off estimated retail
    Samgami Baby Two Piece Swimsuit (view 2)Samgami Baby Two Piece Swimsuit (view 1)New With Tags
    View Product: Samgami Baby Two Piece Swimsuit

    Samgami Baby

    Two Piece Swimsuit
    Size 4
    $9.99 $7.99 20% off with code HOTDEAL
    55% off estimated retail
    Miles One Piece Swimsuit (view 2)Miles One Piece Swimsuit (view 1)
    View Product: Miles One Piece Swimsuit

    Miles

    One Piece Swimsuit
    Size 4
    $18.99 $14.24 25% off with code HOTDEAL
    52% off estimated retail
    Freestyle By Danskin One Piece Swimsuit (view 2)Freestyle By Danskin One Piece Swimsuit (view 1)
    View Product: Freestyle By Danskin One Piece Swimsuit

    Freestyle By Danskin

    One Piece Swimsuit
    Size 4
    $11.99 $9.59 20% off with code HOTDEAL
    21% 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 4
    $16.99 $11.89 30% off with code HOTDEAL
    17% off estimated retail
    Wonder Nation One Piece Swimsuit (view 2)Wonder Nation One Piece Swimsuit (view 1)
    View Product: Wonder Nation One Piece Swimsuit

    Wonder Nation

    One Piece Swimsuit
    Size 4
    $10.99 $8.79 20% off with code HOTDEAL
    35% 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 HOTDEAL
    52% off estimated retail
    Next Rash Guard (view 2)Next Rash Guard (view 1)
    View Product: Next Rash Guard

    Next

    Rash Guard
    Size 4
    $11.99 $9.59 20% off with code HOTDEAL
    45% 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 4
    $14.99 $11.99 20% off with code HOTDEAL
    48% off estimated retail
    Bentex Group Board Shorts (view 2)Bentex Group Board Shorts (view 1)
    View Product: Bentex Group Board Shorts

    Bentex Group

    Board Shorts
    Size 4
    $11.99 $9.59 20% off with code HOTDEAL
    38% off estimated retail
    More Than Magic Rash Guard (view 2)More Than Magic Rash Guard (view 1)Price Drop
    View Product: More Than Magic Rash Guard

    More Than Magic

    Rash Guard
    Size 4
    $8.99 $7.19 20% off with code HOTDEAL
    42% 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 4
    $15.99 $9.59 40% off with code HOTDEAL
    35% 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 4
    $16.99 $11.04 35% off with code HOTDEAL
    53% off estimated retail
    PilyQ Two Piece Swimsuit (view 2)PilyQ Two Piece Swimsuit (view 1)Price Drop
    View Product: PilyQ Two Piece Swimsuit

    PilyQ

    Two Piece Swimsuit
    Size 4
    $19.99 $10.99 45% off with code HOTDEAL
    81% off estimated retail
    Floatimini Rash Guard (view 2)Floatimini Rash Guard (view 1)Price Drop
    View Product: Floatimini Rash Guard

    Floatimini

    Rash Guard
    Size 4
    $16.99 $10.19 40% off with code HOTDEAL
    83% off estimated retail
    Tuga Board Shorts (view 2)Tuga Board Shorts (view 1)Price Drop
    View Product: Tuga Board Shorts

    Tuga

    Board Shorts
    Size 4
    $9.99 $5.99 40% off with code HOTDEAL
    60% 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 4
    $12.99 $7.79 40% off with code HOTDEAL
    45% off estimated retail
    ZeroXposur Rash Guard (view 2)ZeroXposur Rash Guard (view 1)Price Drop
    View Product: ZeroXposur Rash Guard

    ZeroXposur

    Rash Guard
    Size 4
    $9.99 $5.99 40% off with code HOTDEAL
    73% off estimated retail
    Nickelodeon Rash Guard (view 2)Nickelodeon Rash Guard (view 1)Price Drop
    View Product: Nickelodeon Rash Guard

    Nickelodeon

    Rash Guard
    Size 4
    $10.99
    55% off estimated retail
    Marina West One Piece Swimsuit (view 2)Marina West One Piece Swimsuit (view 1)Price Drop
    View Product: Marina West One Piece Swimsuit

    Marina West

    One Piece Swimsuit
    Size 4
    $10.99 $6.59 40% off with code HOTDEAL
    55% off estimated retail
    Dunlop Rash Guard (view 2)Dunlop Rash Guard (view 1)Price Drop
    View Product: Dunlop Rash Guard

    Dunlop

    Rash Guard
    Size 4
    $10.24 $6.14 40% off with code HOTDEAL
    66% off estimated retail
    More Than Magic Rash Guard (view 2)More Than Magic Rash Guard (view 1)
    View Product: More Than Magic Rash Guard

    More Than Magic

    Rash Guard
    Size 4
    $10.99 $6.59 40% off with code HOTDEAL
    28% off estimated retail
    More Than Magic Rash Guard (view 2)More Than Magic Rash Guard (view 1)Price Drop
    View Product: More Than Magic Rash Guard

    More Than Magic

    Rash Guard
    Size 4
    $7.99 $4.79 40% off with code HOTDEAL
    46% off estimated retail
    More Than Magic Rash Guard (view 2)More Than Magic Rash Guard (view 1)Price Drop
    View Product: More Than Magic Rash Guard

    More Than Magic

    Rash Guard
    Size 4
    $9.24 $5.54 40% off with code HOTDEAL
    46% off estimated retail
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