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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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1,240 items
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    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
    $12.24 $7.34 40% off with code HOTDEAL
    55% 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 18-24 mo
    $14.24 $8.54 40% off with code HOTDEAL
    66% 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 3-6 mo
    $8.99 $5.39 40% off with code HOTDEAL
    55% 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 Large youth
    $10.99 $6.59 40% off with code HOTDEAL
    55% off estimated retail
    The Edit. Forever Classic, Get perfectly polished in trousers, blazers, and more. Shop The Edit
    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 Small infants
    $12.24 $7.34 40% off with code HOTDEAL
    59% 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
    Baby Buns One Piece Swimsuit (view 2)Baby Buns One Piece Swimsuit (view 1)Price Drop
    View Product: Baby Buns One Piece Swimsuit

    Baby Buns

    One Piece Swimsuit
    Size 18 mo
    $11.24 $6.74 40% off with code HOTDEAL
    59% off estimated retail
    Imagine Me One Piece Swimsuit (view 2)Imagine Me One Piece Swimsuit (view 1)
    View Product: Imagine Me One Piece Swimsuit

    Imagine Me

    One Piece Swimsuit
    Size 18 mo
    $8.99 $5.39 40% off with code HOTDEAL
    18% 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
    $11.24 $6.74 40% off with code HOTDEAL
    50% 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 18-24 mo
    $15.24 $9.14 40% off with code HOTDEAL
    66% off estimated retail
    Gap One Piece Swimsuit (view 2)Gap One Piece Swimsuit (view 1)Price Drop
    View Product: Gap One Piece Swimsuit

    Gap

    One Piece Swimsuit
    Size 50 cm
    $11.24 $6.74 40% off with code HOTDEAL
    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 18 mo
    $10.99 $6.59 40% off with code HOTDEAL
    18% off estimated retail
    Gymboree Rash Guard (view 2)Gymboree Rash Guard (view 1)Price Drop
    View Product: Gymboree Rash Guard

    Gymboree

    Rash Guard
    Size 6-12 mo
    $12.24 $7.34 40% off with code HOTDEAL
    60% 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 18 mo
    $17.24 $10.34 40% off with code HOTDEAL
    73% off estimated retail
    Wet One Piece Swimsuit (view 2)Wet One Piece Swimsuit (view 1)Price Drop
    View Product: Wet One Piece Swimsuit

    Wet

    One Piece Swimsuit
    Size 18 mo
    $9.24 $5.54 40% off with code HOTDEAL
    20% off estimated retail
    Happi by Dena One Piece Swimsuit (view 2)Happi by Dena One Piece Swimsuit (view 1)Price Drop
    View Product: Happi by Dena One Piece Swimsuit

    Happi by Dena

    One Piece Swimsuit
    Size 0-3 mo
    $16.24 $9.74 40% off with code HOTDEAL
    71% 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 3-6 mo
    $11.24 $6.74 40% off with code HOTDEAL
    64% 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 18-24 mo
    $12.24 $7.34 40% off with code HOTDEAL
    64% 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
    $9.24 $5.54 40% off with code HOTDEAL
    68% 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
    Plaid Fish One Piece Swimsuit (view 2)Plaid Fish One Piece Swimsuit (view 1)Price Drop
    View Product: Plaid Fish One Piece Swimsuit

    Plaid Fish

    One Piece Swimsuit
    Size 18 mo
    $9.24 $5.54 40% off with code HOTDEAL
    20% 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 0-3 mo
    $11.24 $6.74 40% off with code HOTDEAL
    55% off estimated retail
    Unbranded Two Piece Swimsuit (view 2)Unbranded Two Piece Swimsuit (view 1)Price Drop
    View Product: Unbranded Two Piece Swimsuit

    Unbranded

    Two Piece Swimsuit
    Size 12 mo
    $11.24 $6.74 40% off with code HOTDEAL
    55% 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
    $10.24 $6.14 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
    $9.99 $5.99 40% off with code HOTDEAL
    30% 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
    $11.24 $6.74 40% off with code HOTDEAL
    47% 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 tots
    $8.24 $4.94 40% off with code HOTDEAL
    20% 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 4
    $9.99 $5.99 40% off with code HOTDEAL
    30% off estimated retail
    Gymboree Rash Guard (view 2)Gymboree Rash Guard (view 1)
    View Product: Gymboree Rash Guard

    Gymboree

    Rash Guard
    Size 6-12 mo
    $10.99 $6.59 40% 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 12-18 mo
    $10.24 $6.14 40% off with code HOTDEAL
    65% 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 12 mo
    $11.24 $6.74 40% off with code HOTDEAL
    73% 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 3-6 mo
    $9.24 $5.54 40% off with code HOTDEAL
    65% 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 3-6 mo
    $10.24 $6.14 40% off with code HOTDEAL
    65% 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
    $10.24 $6.14 40% off with code HOTDEAL
    72% 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 7
    $9.99 $5.99 40% off with code HOTDEAL
    40% 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 6-9 mo
    $9.24 $5.54 40% off with code HOTDEAL
    65% 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 Small infants
    $7.99 $4.79 40% off with code HOTDEAL
    65% off estimated retail
    Floatimini One Piece Swimsuit (view 2)Floatimini One Piece Swimsuit (view 1)Price Drop
    View Product: Floatimini One Piece Swimsuit

    Floatimini

    One Piece Swimsuit
    Size 12-18 mo
    $8.24 $4.94 40% off with code HOTDEAL
    86% 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 Small infants
    $7.99 $4.79 40% off with code HOTDEAL
    65% off estimated retail
    Op One Piece Swimsuit (view 2)Op One Piece Swimsuit (view 1)Price Drop
    View Product: Op One Piece Swimsuit

    Op

    One Piece Swimsuit
    Size 18 mo
    $8.99 $5.39 40% off with code HOTDEAL
    20% 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 Small infants
    $8.99 $5.39 40% off with code HOTDEAL
    20% off estimated retail
    Koala Kids One Piece Swimsuit (view 2)Koala Kids One Piece Swimsuit (view 1)Price Drop
    View Product: Koala Kids One Piece Swimsuit

    Koala Kids

    One Piece Swimsuit
    Size 6 mo
    $8.99 $5.39 40% off with code HOTDEAL
    20% 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
    $8.99 $5.39 40% off with code HOTDEAL
    60% 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 6-9 mo
    $8.99 $5.39 40% off with code HOTDEAL
    71% 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 6-9 mo
    $8.99 $5.39 40% off with code HOTDEAL
    60% off estimated retail
    Old Navy Outlet One Piece Swimsuit (view 2)Old Navy Outlet One Piece Swimsuit (view 1)Price Drop
    View Product: Old Navy Outlet One Piece Swimsuit

    Old Navy Outlet

    One Piece Swimsuit
    Size 12-18 mo
    $8.99 $5.39 40% off with code HOTDEAL
    20% 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
    $8.99 $5.39 40% off with code HOTDEAL
    60% 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 Small infants
    $8.99 $5.39 40% off with code HOTDEAL
    60% 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
    $8.24 $4.94 40% off with code HOTDEAL
    65% 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 6-12 mo
    $8.24 $4.94 40% off with code HOTDEAL
    65% off estimated retail
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