About
ThredUp LogoThredUp
Shop
SellCleanout animation
Beta
My ThredUp
Account
0
Check out

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.

TealRemove filterIvoryRemove filterNew ArrivalsRemove filter
47 items
Sort by:
    Roxy One Piece Swimsuit (view 2)Roxy One Piece Swimsuit (view 1)
    View Product: Roxy One Piece Swimsuit

    Roxy

    One Piece Swimsuit
    Size Medium infants
    $8.99
    66% 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 18-24 mo
    $10.99
    59% off estimated retail
    Tea One Piece Swimsuit (view 2)Tea One Piece Swimsuit (view 1)
    View Product: Tea One Piece Swimsuit

    Tea

    One Piece Swimsuit
    Size 4
    $28.99
    39% off estimated retail
    Minnow One Piece Swimsuit (view 2)Minnow One Piece Swimsuit (view 1)
    View Product: Minnow One Piece Swimsuit

    Minnow

    One Piece Swimsuit
    Size 6 mo
    $32.99
    59% off estimated retail
    The Edit. Forever Classic, Get perfectly polished in trousers, blazers, and more. Shop The Edit
    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
    $11.99
    55% 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 6-12 mo
    $10.99
    59% off estimated retail
    O'Rageous One Piece Swimsuit (view 2)O'Rageous One Piece Swimsuit (view 1)
    View Product: O'Rageous One Piece Swimsuit

    O'Rageous

    One Piece Swimsuit
    Size 16
    $12.99
    48% 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
    Peek... One Piece Swimsuit (view 2)Peek... One Piece Swimsuit (view 1)
    View Product: Peek... One Piece Swimsuit

    Peek...

    One Piece Swimsuit
    Size 6
    $18.99
    61% off estimated retail
    Crewcuts Swimsuit Cover Up (view 2)Crewcuts Swimsuit Cover Up (view 1)
    View Product: Crewcuts Swimsuit Cover Up

    Crewcuts

    Swimsuit Cover Up
    Size 10
    $20.99
    67% off estimated retail
    Just My Size One Piece Swimsuit (view 2)Just My Size One Piece Swimsuit (view 1)
    View Product: Just My Size One Piece Swimsuit

    Just My Size

    One Piece Swimsuit
    Size 12
    $11.99
    25% off estimated retail
    Platinum Two Piece Swimsuit (view 2)Platinum Two Piece Swimsuit (view 1)
    View Product: Platinum Two Piece Swimsuit

    Platinum

    Two Piece Swimsuit
    Size 12
    $16.99
    36% 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
    $19.99
    51% 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
    $12.99
    27% 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 3 mo
    $12.99
    56% 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 Large youth
    $12.99
    35% 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
    $23.99
    31% 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 Medium youth
    $10.99
    35% 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 0-3 mo
    $11.99
    25% off estimated retail
    H&M One Piece Swimsuit (view 2)H&M One Piece Swimsuit (view 1)
    View Product: H&M One Piece Swimsuit

    H&M

    One Piece Swimsuit
    Size 8
    $14.99
    35% off estimated retail
    Shade Critters Rash Guard (view 2)Shade Critters Rash Guard (view 1)
    View Product: Shade Critters Rash Guard

    Shade Critters

    Rash Guard
    Size 5T
    $18.99
    65% off estimated retail
    JoJo Maman Bebe One Piece Swimsuit (view 2)JoJo Maman Bebe One Piece Swimsuit (view 1)
    View Product: JoJo Maman Bebe One Piece Swimsuit

    JoJo Maman Bebe

    One Piece Swimsuit
    Size 2
    $12.99
    66% 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 X-Large youth
    $11.99
    41% 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
    Disney One Piece Swimsuit (view 2)Disney One Piece Swimsuit (view 1)
    View Product: Disney One Piece Swimsuit

    Disney

    One Piece Swimsuit
    Size 5
    $17.99
    30% off estimated retail
    Minnow One Piece Swimsuit (view 2)Minnow One Piece Swimsuit (view 1)
    View Product: Minnow One Piece Swimsuit

    Minnow

    One Piece Swimsuit
    Size 3
    $33.99
    58% off estimated retail
    Tuga Wetsuit (view 2)Tuga Wetsuit (view 1)
    View Product: Tuga Wetsuit

    Tuga

    Wetsuit
    Size 7
    $29.99
    64% 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 3T
    $15.99
    23% off estimated retail
    Garnet Hill Swimsuit Cover Up (view 2)Garnet Hill Swimsuit Cover Up (view 1)
    View Product: Garnet Hill Swimsuit Cover Up

    Garnet Hill

    Swimsuit Cover Up
    Size X-Large kids
    $15.99
    51% 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
    Unbranded One Piece Swimsuit (view 2)Unbranded One Piece Swimsuit (view 1)
    View Product: Unbranded One Piece Swimsuit

    Unbranded

    One Piece Swimsuit
    Size Small kids
    $13.99
    48% off estimated retail
    Crewcuts Outlet One Piece Swimsuit (view 2)Crewcuts Outlet One Piece Swimsuit (view 1)
    View Product: Crewcuts Outlet One Piece Swimsuit

    Crewcuts Outlet

    One Piece Swimsuit
    Size 14
    $16.99
    44% 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
    $12.99
    23% off estimated retail
    Carter's Two Piece Swimsuit (view 2)Carter's Two Piece Swimsuit (view 1)
    View Product: Carter's Two Piece Swimsuit

    Carter's

    Two Piece Swimsuit
    Size 2T
    $19.99
    44% off estimated retail
    Cecil and Lou One Piece Swimsuit (view 2)Cecil and Lou One Piece Swimsuit (view 1)
    View Product: Cecil and Lou One Piece Swimsuit

    Cecil and Lou

    One Piece Swimsuit
    Size 3T
    $8.99
    47% 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
    Old Navy Rash Guard (view 2)Old Navy Rash Guard (view 1)New With Tags
    View Product: Old Navy Rash Guard

    Old Navy

    Rash Guard
    Size 6-12 mo
    $11.99 $12
    Lands' End Rash Guard (view 2)Lands' End Rash Guard (view 1)
    View Product: Lands' End Rash Guard

    Lands' End

    Rash Guard
    Size 7
    $26.99
    39% 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 12-18 mo
    $18.99
    61% 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 18-24 mo
    $12.99 $11
    Ivivva One Piece Swimsuit (view 2)Ivivva One Piece Swimsuit (view 1)
    View Product: Ivivva One Piece Swimsuit

    Ivivva

    One Piece Swimsuit
    Size 10
    $22.99
    53% off estimated retail
    Splendid One Piece Swimsuit (view 2)Splendid One Piece Swimsuit (view 1)New With Tags
    View Product: Splendid One Piece Swimsuit

    Splendid

    One Piece Swimsuit
    Size 16
    $19.99
    59% off estimated retail
    Shade Critters One Piece Swimsuit (view 2)Shade Critters One Piece Swimsuit (view 1)
    View Product: Shade Critters One Piece Swimsuit

    Shade Critters

    One Piece Swimsuit
    Size 18-24 mo
    $23.99
    54% off estimated retail
    Cat & Jack Rash Guard (view 2)Cat & Jack Rash Guard (view 1)Flawed Gem
    View Product: Cat & Jack Rash Guard

    Cat & Jack

    Rash Guard
    Size 2T
    $11.99
    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
    Abercrombie One Piece Swimsuit (view 2)Abercrombie One Piece Swimsuit (view 1)
    View Product: Abercrombie One Piece Swimsuit

    Abercrombie

    One Piece Swimsuit
    Size 9
    $13.99
    64% off estimated retail
    Back
    1
    Next

    Loading...