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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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68 items
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    Athleta Board Shorts (view 2)Athleta Board Shorts (view 1)New With Tags
    View Product: Athleta Board Shorts

    Athleta

    Board Shorts
    Size X-Large kids
    $14.99 $8.24 45% off with code GOBIG
    46% off estimated retail
    Quiksilver Rash Guard (view 2)Quiksilver Rash Guard (view 1)
    View Product: Quiksilver Rash Guard

    Quiksilver

    Rash Guard
    Size 14
    $17.99 $9.89 45% off with code GOBIG
    45% off estimated retail
    Hanna Andersson One Piece Swimsuit (view 2)Hanna Andersson One Piece Swimsuit (view 1)
    View Product: Hanna Andersson One Piece Swimsuit

    Hanna Andersson

    One Piece Swimsuit
    Size 4
    $21.99 $12.09 45% off with code GOBIG
    46% 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 6 mo
    $11.99 $6.59 45% off with code GOBIG
    45% 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 6X
    $9.99 $5.49 45% off with code GOBIG
    41% off estimated retail
    Cat & Jack Swimsuit Cover Up (view 2)Cat & Jack Swimsuit Cover Up (view 1)New With Tags
    View Product: Cat & Jack Swimsuit Cover Up

    Cat & Jack

    Swimsuit Cover Up
    Size 6
    $9.99 $5.49 45% off with code GOBIG
    41% off estimated retail
    Bloch One Piece Swimsuit (view 2)Bloch One Piece Swimsuit (view 1)
    View Product: Bloch One Piece Swimsuit

    Bloch

    One Piece Swimsuit
    Size 2
    $7.99 $4.39 45% off with code GOBIG
    63% off estimated retail
    Raisins One Piece Swimsuit (view 2)Raisins One Piece Swimsuit (view 1)
    View Product: Raisins One Piece Swimsuit

    Raisins

    One Piece Swimsuit
    Size 10
    $12.99 $7.14 45% off with code GOBIG
    48% off estimated retail
    Janie and Jack One Piece Swimsuit (view 2)Janie and Jack One Piece Swimsuit (view 1)
    View Product: Janie and Jack One Piece Swimsuit

    Janie and Jack

    One Piece Swimsuit
    Size 3
    $17.99 $9.89 45% off with code GOBIG
    57% 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 10
    $16.99 $9.34 45% off with code GOBIG
    48% off estimated retail
    Cat & Jack Swimsuit Cover Up (view 2)Cat & Jack Swimsuit Cover Up (view 1)
    View Product: Cat & Jack Swimsuit Cover Up

    Cat & Jack

    Swimsuit Cover Up
    Size X-Large youth
    $9.99 $5.49 45% off with code GOBIG
    41% 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
    $10.99 $6.04 45% off with code GOBIG
    $12
    OndadeMar One Piece Swimsuit (view 2)OndadeMar One Piece Swimsuit (view 1)
    View Product: OndadeMar One Piece Swimsuit

    OndadeMar

    One Piece Swimsuit
    Size 18-24 mo
    $23.99 $13.19 45% off with code GOBIG
    68% 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 Large youth
    $8.99 $4.94 45% off with code GOBIG
    43% off estimated retail
    Abercrombie One Piece Swimsuit (view 2)Abercrombie One Piece Swimsuit (view 1)New With Tags
    View Product: Abercrombie One Piece Swimsuit

    Abercrombie

    One Piece Swimsuit
    Size 15
    $16.99 $9.34 45% off with code GOBIG
    57% 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 7
    $28.99 $15.94 45% off with code GOBIG
    51% off estimated retail
    Assorted Brands Rash Guard (view 2)Assorted Brands Rash Guard (view 1)New With Tags
    View Product: Assorted Brands Rash Guard

    Assorted Brands

    Rash Guard
    Size 14
    $14.99 $8.24 45% off with code GOBIG
    63% 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 2T
    $12.99 $7.14 45% off with code GOBIG
    63% off estimated retail
    Assorted Brands Swimsuit Cover Up (view 2)Assorted Brands Swimsuit Cover Up (view 1)
    View Product: Assorted Brands Swimsuit Cover Up

    Assorted Brands

    Swimsuit Cover Up
    Size 5T
    $10.99 $6.04 45% off with code GOBIG
    59% off estimated retail
    Cat & Jack Two Piece Swimsuit (view 2)Cat & Jack Two Piece Swimsuit (view 1)
    View Product: Cat & Jack Two Piece Swimsuit

    Cat & Jack

    Two Piece Swimsuit
    Size 12 mo
    $8.99 $4.94 45% off with code GOBIG
    47% 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 2T
    $11.99 $6.59 45% off with code GOBIG
    29% 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 Large kids
    $26.99 $14.84 45% off with code GOBIG
    55% off estimated retail
    Roxy One Piece Swimsuit (view 2)Roxy One Piece Swimsuit (view 1)
    View Product: Roxy One Piece Swimsuit

    Roxy

    One Piece Swimsuit
    Size 7
    $18.99 $10.44 45% off with code GOBIG
    53% 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
    $7.99 $4.39 45% off with code GOBIG
    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
    $16.99 $9.34 45% off with code GOBIG
    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
    $9.99 $5.49 45% off with code GOBIG
    69% 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
    $22.99 $12.64 45% off with code GOBIG
    34% 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 2T
    $9.99 $5.49 45% off with code GOBIG
    72% off estimated retail
    Venus Rash Guard (view 2)Venus Rash Guard (view 1)
    View Product: Venus Rash Guard

    Venus

    Rash Guard
    Size 12
    $7.99 $4.39 45% off with code GOBIG
    50% 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
    $13.99 $7.69 45% off with code GOBIG
    48% 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 18 mo
    $10.99 $6.04 45% off with code GOBIG
    50% off estimated retail
    Wear Moi One Piece Swimsuit (view 2)Wear Moi One Piece Swimsuit (view 1)
    View Product: Wear Moi One Piece Swimsuit

    Wear Moi

    One Piece Swimsuit
    Size 6
    $23.99 $13.19 45% off with code GOBIG
    51% off estimated retail
    Genuine Sports Rash Guard (view 2)Genuine Sports Rash Guard (view 1)
    View Product: Genuine Sports Rash Guard

    Genuine Sports

    Rash Guard
    Size 24 mo
    $8.99 $4.94 45% off with code GOBIG
    18% off estimated retail
    Egg New York One Piece Swimsuit (view 2)Egg New York One Piece Swimsuit (view 1)
    View Product: Egg New York One Piece Swimsuit

    Egg New York

    One Piece Swimsuit
    Size 3T
    $28.99 $15.94 45% off with code GOBIG
    64% 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
    $9.99 $5.49 45% off with code GOBIG
    67% off estimated retail
    Peixoto Two Piece Swimsuit (view 2)Peixoto Two Piece Swimsuit (view 1)
    View Product: Peixoto Two Piece Swimsuit

    Peixoto

    Two Piece Swimsuit
    Size 2
    $20.99 $11.54 45% off with code GOBIG
    61% off estimated retail
    Peixoto Two Piece Swimsuit (view 2)Peixoto Two Piece Swimsuit (view 1)
    View Product: Peixoto Two Piece Swimsuit

    Peixoto

    Two Piece Swimsuit
    Size 2
    $20.99 $11.54 45% off with code GOBIG
    61% 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
    $13.99 $7.69 45% off with code GOBIG
    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
    $10.99 $6.04 45% off with code GOBIG
    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
    $26.99 $14.84 45% off with code GOBIG
    71% off estimated retail
    Lands' End Swimsuit Cover Up (view 2)Lands' End Swimsuit Cover Up (view 1)Price Drop
    View Product: Lands' End Swimsuit Cover Up

    Lands' End

    Swimsuit Cover Up
    Size 6
    $27.99 $15.39 45% off with code GOBIG
    26% 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 24 mo
    $13.99 $7.69 45% off with code GOBIG
    36% 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
    $10.99 $6.04 45% off with code GOBIG
    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
    $11.99 $6.59 45% off with code GOBIG
    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
    $16.99 $9.34 45% off with code GOBIG
    48% 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
    $8.99 $4.94 45% off with code GOBIG
    50% off estimated retail
    Ruffle Butts Two Piece Swimsuit (view 2)Ruffle Butts Two Piece Swimsuit (view 1)
    View Product: Ruffle Butts Two Piece Swimsuit

    Ruffle Butts

    Two Piece Swimsuit
    Size 2T
    $9.99 $5.49 45% off with code GOBIG
    $11
    xcel Rash Guard (view 2)xcel Rash Guard (view 1)Price Drop
    View Product: xcel Rash Guard

    xcel

    Rash Guard
    Size 12
    $17.99 $9.89 45% off with code GOBIG
    63% off estimated retail
    Dolce Vita Two Piece Swimsuit (view 2)Dolce Vita Two Piece Swimsuit (view 1)New With Tags
    View Product: Dolce Vita Two Piece Swimsuit

    Dolce Vita

    Two Piece Swimsuit
    Size Medium kids
    $21.99 $12.09 45% off with code GOBIG
    66% 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
    $10.99 $6.04 45% off with code GOBIG
    56% 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
    $9.99 $5.49 45% off with code GOBIG
    50% off estimated retail
    Op Two Piece Swimsuit (view 2)Op Two Piece Swimsuit (view 1)Price Drop
    View Product: Op Two Piece Swimsuit

    Op

    Two Piece Swimsuit
    Size X-Large youth
    $9.99 $5.49 45% off with code GOBIG
    37% 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
    $9.99 $5.49 45% off with code GOBIG
    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
    $9.99 $5.49 45% off with code GOBIG
    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
    $9.99 $5.49 45% off with code GOBIG
    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 2
    $8.99 $4.94 45% off with code GOBIG
    43% 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
    $9.99 $5.49 45% off with code GOBIG
    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
    $9.99 $5.49 45% off with code GOBIG
    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
    $6.99 $3.84 45% off with code GOBIG
    50% 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 Large kids
    $9.99 $5.49 45% off with code GOBIG
    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 24 mo
    $8.99 $4.94 45% off with code GOBIG
    62% 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 $4.94 45% off with code GOBIG
    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
    $8.99 $4.94 45% off with code GOBIG
    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
    $8.99 $4.94 45% off with code GOBIG
    59% 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 2T
    $8.99 $4.94 45% off with code GOBIG
    65% off estimated retail
    Tutto Piccolo Board Shorts (view 2)Tutto Piccolo Board Shorts (view 1)Price Drop
    View Product: Tutto Piccolo Board Shorts

    Tutto Piccolo

    Board Shorts
    Size 9 mo
    $8.99 $4.94 45% off with code GOBIG
    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
    $8.99 $4.94 45% off with code GOBIG
    18% off estimated retail
    Water Wears One Piece Swimsuit (view 2)Water Wears One Piece Swimsuit (view 1)Price Drop
    View Product: Water Wears One Piece Swimsuit

    Water Wears

    One Piece Swimsuit
    Size 6-12 mo
    $8.99 $4.94 45% off with code GOBIG
    55% off estimated retail
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