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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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77 items
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    Egg by Susan Lazar Two Piece Swimsuit (view 2)Egg by Susan Lazar Two Piece Swimsuit (view 1)
    View Product: Egg by Susan Lazar Two Piece Swimsuit

    Egg by Susan Lazar

    Two Piece Swimsuit
    Size 6
    $14.99
    54% off estimated retail
    Crewcuts One Piece Swimsuit (view 2)Crewcuts One Piece Swimsuit (view 1)
    View Product: Crewcuts One Piece Swimsuit

    Crewcuts

    One Piece Swimsuit
    Size 4
    $14.99
    63% off estimated retail
    Stella Cove One Piece Swimsuit (view 2)Stella Cove One Piece Swimsuit (view 1)
    View Product: Stella Cove One Piece Swimsuit

    Stella Cove

    One Piece Swimsuit
    Size 10
    $14.99
    63% off estimated retail
    Mini Boden One Piece Swimsuit (view 2)Mini Boden One Piece Swimsuit (view 1)
    View Product: Mini Boden One Piece Swimsuit

    Mini Boden

    One Piece Swimsuit
    Size 8
    $20.99
    30% off estimated retail
    The Edit. Forever Classic, Get perfectly polished in trousers, blazers, and more. Shop The Edit
    Roxy Two Piece Swimsuit (view 2)Roxy Two Piece Swimsuit (view 1)
    View Product: Roxy Two Piece Swimsuit

    Roxy

    Two Piece Swimsuit
    Size 7
    $16.99
    58% 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 2T
    $25.99
    36% off estimated retail
    Justice Two Piece Swimsuit (view 2)Justice Two Piece Swimsuit (view 1)
    View Product: Justice Two Piece Swimsuit

    Justice

    Two Piece Swimsuit
    Size 12
    $16.99
    48% off estimated retail
    O'Neill One Piece Swimsuit (view 2)O'Neill One Piece Swimsuit (view 1)
    View Product: O'Neill One Piece Swimsuit

    O'Neill

    One Piece Swimsuit
    Size 10
    $18.99
    42% 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 2T
    $12.99
    23% 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 70 cm
    $17.99
    18% 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 10
    $17.99
    56% 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 18 mo
    $18.99
    47% 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 10
    $14.99
    54% off estimated retail
    Gap Two Piece Swimsuit (view 2)Gap Two Piece Swimsuit (view 1)
    View Product: Gap Two Piece Swimsuit

    Gap

    Two Piece Swimsuit
    Size Large kids
    $17.99
    55% 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 6
    $15.99
    54% 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
    $15.99
    61% off estimated retail
    Terez One Piece Swimsuit (view 2)Terez One Piece Swimsuit (view 1)
    View Product: Terez One Piece Swimsuit

    Terez

    One Piece Swimsuit
    Size 6
    $20.99
    74% off estimated retail
    Stella Cove One Piece Swimsuit (view 2)Stella Cove One Piece Swimsuit (view 1)
    View Product: Stella Cove One Piece Swimsuit

    Stella Cove

    One Piece Swimsuit
    Size 8
    $14.99
    63% off estimated retail
    Nordstrom One Piece Swimsuit (view 2)Nordstrom One Piece Swimsuit (view 1)
    View Product: Nordstrom One Piece Swimsuit

    Nordstrom

    One Piece Swimsuit
    Size 12
    $15.99
    61% off estimated retail
    Mayoral Two Piece Swimsuit (view 2)Mayoral Two Piece Swimsuit (view 1)
    View Product: Mayoral Two Piece Swimsuit

    Mayoral

    Two Piece Swimsuit
    Size 10
    $12.99
    73% off estimated retail
    Lands' End Two Piece Swimsuit (view 2)Lands' End Two Piece Swimsuit (view 1)
    View Product: Lands' End Two Piece Swimsuit

    Lands' End

    Two Piece Swimsuit
    Size 5
    $17.99
    33% 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
    Crewcuts Rash Guard (view 2)Crewcuts Rash Guard (view 1)
    View Product: Crewcuts Rash Guard

    Crewcuts

    Rash Guard
    Size 6
    $21.99
    55% off estimated retail
    Art Class One Piece Swimsuit (view 2)Art Class One Piece Swimsuit (view 1)
    View Product: Art Class One Piece Swimsuit

    Art Class

    One Piece Swimsuit
    Size 14
    $14.99 $11.24 25% off with code SHINE
    25% off estimated retail
    Gap Kids One Piece Swimsuit (view 2)Gap Kids One Piece Swimsuit (view 1)
    View Product: Gap Kids One Piece Swimsuit

    Gap Kids

    One Piece Swimsuit
    Size Small kids
    $17.99 $11.69 35% off with code SHINE
    43% 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 3T
    $13.99 $10.49 25% off with code SHINE
    48% 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
    $12.99 $10.39 20% off with code SHINE
    23% off estimated retail
    Gossip Girl One Piece Swimsuit (view 2)Gossip Girl One Piece Swimsuit (view 1)
    View Product: Gossip Girl One Piece Swimsuit

    Gossip Girl

    One Piece Swimsuit
    Size 16
    $15.99 $11.99 25% off with code SHINE
    51% off estimated retail
    Crewcuts One Piece Swimsuit (view 2)Crewcuts One Piece Swimsuit (view 1)
    View Product: Crewcuts One Piece Swimsuit

    Crewcuts

    One Piece Swimsuit
    Size 14
    $16.99 $11.89 30% off with code SHINE
    65% off estimated retail
    Ivivva One Piece Swimsuit (view 2)Ivivva One Piece Swimsuit (view 1)
    View Product: Ivivva One Piece Swimsuit

    Ivivva

    One Piece Swimsuit
    Size 8
    $18.99 $13.29 30% off with code SHINE
    61% 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 $11.69 35% off with code SHINE
    57% 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 12 mo
    $17.99 $14.39 20% off with code SHINE
    50% 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 6
    $17.99 $12.59 30% off with code SHINE
    57% off estimated retail
    REI Rash Guard (view 2)REI Rash Guard (view 1)
    View Product: REI Rash Guard

    REI

    Rash Guard
    Size X-Large youth
    $14.99 $10.49 30% off with code SHINE
    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 6
    $13.99 $10.49 25% off with code SHINE
    64% off estimated retail
    Gymboree Rash Guard (view 2)Gymboree Rash Guard (view 1)
    View Product: Gymboree Rash Guard

    Gymboree

    Rash Guard
    Size 4T
    $14.99 $11.99 20% off with code SHINE
    34% off estimated retail
    Egg by Susan Lazar One Piece Swimsuit (view 2)Egg by Susan Lazar One Piece Swimsuit (view 1)
    View Product: Egg by Susan Lazar One Piece Swimsuit

    Egg by Susan Lazar

    One Piece Swimsuit
    Size 12 mo
    $12.99 $9.74 25% off with code SHINE
    40% 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 13
    $12.99 $10.39 20% off with code SHINE
    64% 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 Medium youth
    $12.99 $9.74 25% off with code SHINE
    60% off estimated retail
    Millie Loves Lily Rash Guard (view 2)Millie Loves Lily Rash Guard (view 1)
    View Product: Millie Loves Lily Rash Guard

    Millie Loves Lily

    Rash Guard
    Size 3T
    $18.99 $14.24 25% off with code SHINE
    44% 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 10
    $24.99 $16.24 35% off with code SHINE
    61% 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 12 mo
    $13.99 $11.19 20% off with code SHINE
    61% 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 6
    $22.99 $16.09 30% off with code SHINE
    39% off estimated retail
    Unbranded Rash Guard (view 2)Unbranded Rash Guard (view 1)
    View Product: Unbranded Rash Guard

    Unbranded

    Rash Guard
    Size 7
    $13.99 $11.19 20% off with code SHINE
    57% off estimated retail
    Art Class Two Piece Swimsuit (view 2)Art Class Two Piece Swimsuit (view 1)
    View Product: Art Class Two Piece Swimsuit

    Art Class

    Two Piece Swimsuit
    Size 4
    $13.99 $11.19 20% off with code SHINE
    17% 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
    $13.99 $10.49 25% off with code SHINE
    53% 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 18
    $20.99 $15.74 25% off with code SHINE
    40% 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 6-12 mo
    $17.99 $13.49 25% off with code SHINE
    57% 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
    $15.99 $12.79 20% off with code SHINE
    44% 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
    $12.99 $10.39 20% off with code SHINE
    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 2T
    $12.99 $10.39 20% off with code SHINE
    23% off estimated retail
    Crewcuts Rash Guard (view 2)Crewcuts Rash Guard (view 1)
    View Product: Crewcuts Rash Guard

    Crewcuts

    Rash Guard
    Size 14
    $17.99 $13.49 25% off with code SHINE
    63% off estimated retail
    Zara One Piece Swimsuit (view 2)Zara One Piece Swimsuit (view 1)
    View Product: Zara One Piece Swimsuit

    Zara

    One Piece Swimsuit
    Size 2
    $12.99 $10.39 20% off with code SHINE
    40% 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 10
    $12.99 $9.74 25% off with code SHINE
    23% off estimated retail
    Hanna Andersson Two Piece Swimsuit (view 2)Hanna Andersson Two Piece Swimsuit (view 1)
    View Product: Hanna Andersson Two Piece Swimsuit

    Hanna Andersson

    Two Piece Swimsuit
    Size 8
    $23.99 $15.59 35% off with code SHINE
    41% off estimated retail
    Limited Too One Piece Swimsuit (view 2)Limited Too One Piece Swimsuit (view 1)
    View Product: Limited Too One Piece Swimsuit

    Limited Too

    One Piece Swimsuit
    Size 3T
    $14.99 $11.99 20% off with code SHINE
    44% off estimated retail
    PilyQ Two Piece Swimsuit (view 2)PilyQ Two Piece Swimsuit (view 1)
    View Product: PilyQ Two Piece Swimsuit

    PilyQ

    Two Piece Swimsuit
    Size 12
    $26.99 $18.89 30% off with code SHINE
    72% 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
    $13.99 $11.19 20% off with code SHINE
    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 6-12 mo
    $16.99 $12.74 25% off with code SHINE
    59% off estimated retail
    OndadeMar One Piece Swimsuit (view 2)OndadeMar One Piece Swimsuit (view 1)
    View Product: OndadeMar One Piece Swimsuit

    OndadeMar

    One Piece Swimsuit
    Size 6
    $26.99 $20.24 25% off with code SHINE
    76% off estimated retail
    Cat & Jack One Piece Swimsuit (view 2)Cat & Jack One Piece Swimsuit (view 1)New With Tags
    View Product: Cat & Jack One Piece Swimsuit

    Cat & Jack

    One Piece Swimsuit
    Size 14 Plus
    $12.99 $10.39 20% off with code SHINE
    23% off estimated retail
    Baby Gap Two Piece Swimsuit (view 2)Baby Gap Two Piece Swimsuit (view 1)
    View Product: Baby Gap Two Piece Swimsuit

    Baby Gap

    Two Piece Swimsuit
    Size 18-24 mo
    $16.99 $12.74 25% 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 X-Large kids
    $12.99 $10.39 20% off with code SHINE
    27% off estimated retail
    Gymboree One Piece Swimsuit (view 2)Gymboree One Piece Swimsuit (view 1)
    View Product: Gymboree One Piece Swimsuit

    Gymboree

    One Piece Swimsuit
    Size 18-24 mo
    $18.99 $14.24 25% off with code SHINE
    29% off estimated retail
    Blueberi Boulevard One Piece Swimsuit (view 2)Blueberi Boulevard One Piece Swimsuit (view 1)
    View Product: Blueberi Boulevard One Piece Swimsuit

    Blueberi Boulevard

    One Piece Swimsuit
    Size 6 mo
    $12.99 $10.39 20% off with code SHINE
    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 8
    $14.99
    54% off estimated retail
    Penelope Mack One Piece Swimsuit (view 2)Penelope Mack One Piece Swimsuit (view 1)Price Drop
    View Product: Penelope Mack One Piece Swimsuit

    Penelope Mack

    One Piece Swimsuit
    Size 4T
    $15.99 $12.79 20% off with code SHINE
    40% 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 12 mo
    $13.99 $11.19 20% off with code SHINE
    61% off estimated retail
    Ivivva Rash Guard (view 2)Ivivva Rash Guard (view 1)Price Drop
    View Product: Ivivva Rash Guard

    Ivivva

    Rash Guard
    Size 12
    $20.99 $13.64 35% off with code SHINE
    57% 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 X-Large kids
    $13.99 $11.19 20% off with code SHINE
    57% 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 12-18 mo
    $12.99 $10.39 20% off with code SHINE
    27% off estimated retail
    Roxy One Piece Swimsuit (view 2)Roxy One Piece Swimsuit (view 1)Price Drop
    View Product: Roxy One Piece Swimsuit

    Roxy

    One Piece Swimsuit
    Size 3
    $14.99 $11.24 25% off with code SHINE
    55% off estimated retail
    Miken Swimsuit Cover Up (view 2)Miken Swimsuit Cover Up (view 1)Price Drop
    View Product: Miken Swimsuit Cover Up

    Miken

    Swimsuit Cover Up
    Size Large infants
    $12.99 $9.09 30% off with code SHINE
    51% off estimated retail
    Assorted Brands Two Piece Swimsuit (view 2)Assorted Brands Two Piece Swimsuit (view 1)Price Drop
    View Product: Assorted Brands Two Piece Swimsuit

    Assorted Brands

    Two Piece Swimsuit
    Size 4
    $12.99 $10.39 20% off with code SHINE
    51% 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 18-24 mo
    $19.99 $12.99 35% off with code SHINE
    51% 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 2T
    $18.99 $14.24 25% off with code SHINE
    65% 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 12 mo
    $15.99 $11.99 25% off with code SHINE
    55% off estimated retail
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