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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.

PurpleRemove filterTanRemove filter$10 - $25Remove filter
56 items
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    Speedo One Piece Swimsuit (view 2)Speedo One Piece Swimsuit (view 1)
    View Product: Speedo One Piece Swimsuit

    Speedo

    One Piece Swimsuit
    Size 8
    $15.99
    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 4
    $12.99
    23% 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
    $20.99
    44% off estimated retail
    Athleta Rash Guard (view 2)Athleta Rash Guard (view 1)
    View Product: Athleta Rash Guard

    Athleta

    Rash Guard
    Size 14
    $22.99
    53% 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 6X
    $13.99
    57% off estimated retail
    Tucker + Tate One Piece Swimsuit (view 2)Tucker + Tate One Piece Swimsuit (view 1)
    View Product: Tucker + Tate One Piece Swimsuit

    Tucker + Tate

    One Piece Swimsuit
    Size 3
    $14.99
    55% off estimated retail
    Tucker + Tate One Piece Swimsuit (view 2)Tucker + Tate One Piece Swimsuit (view 1)
    View Product: Tucker + Tate One Piece Swimsuit

    Tucker + Tate

    One Piece Swimsuit
    Size 2
    $12.99
    51% 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
    $13.99
    57% off estimated retail
    Matilda Jane One Piece Swimsuit (view 2)Matilda Jane One Piece Swimsuit (view 1)
    View Product: Matilda Jane One Piece Swimsuit

    Matilda Jane

    One Piece Swimsuit
    Size 10
    $14.99
    54% off estimated retail
    ZeroXposur One Piece Swimsuit (view 2)ZeroXposur One Piece Swimsuit (view 1)New With Tags
    View Product: ZeroXposur One Piece Swimsuit

    ZeroXposur

    One Piece Swimsuit
    Size 14
    $24.99
    73% 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 12
    $17.99
    52% 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 7
    $15.99
    36% off estimated retail
    Little Creative Factory One Piece Swimsuit (view 2)Little Creative Factory One Piece Swimsuit (view 1)
    View Product: Little Creative Factory One Piece Swimsuit

    Little Creative Factory

    One Piece Swimsuit
    Size 2
    $25.99
    60% off estimated retail
    PixieLane Two Piece Swimsuit (view 2)PixieLane Two Piece Swimsuit (view 1)
    View Product: PixieLane Two Piece Swimsuit

    PixieLane

    Two Piece Swimsuit
    Size 3
    $13.99
    48% 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 X-Small youth
    $14.99 $9.74 35% off with code SHINE
    65% off estimated retail
    Kanu Surf One Piece Swimsuit (view 2)Kanu Surf One Piece Swimsuit (view 1)
    View Product: Kanu Surf One Piece Swimsuit

    Kanu Surf

    One Piece Swimsuit
    Size 10
    $16.99 $12.74 25% off with code SHINE
    48% 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 100 cm
    $12.99 $9.74 25% off with code SHINE
    51% 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 5
    $13.99 $10.49 25% off with code SHINE
    30% 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 2T
    $16.99 $12.74 25% off with code SHINE
    61% 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
    $13.99 $9.09 35% off with code SHINE
    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 14
    $19.99 $13.99 30% off with code SHINE
    61% 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 6X
    $21.99 $15.39 30% off with code SHINE
    63% off estimated retail
    Athleta Rash Guard (view 2)Athleta Rash Guard (view 1)
    View Product: Athleta Rash Guard

    Athleta

    Rash Guard
    Size 12
    $25.99 $13.00 50% off with code SHINE
    46% 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 6
    $12.99 $9.74 25% off with code SHINE
    48% 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
    $21.99 $14.29 35% off with code SHINE
    37% off estimated retail
    Bloch Swimsuit Cover Up (view 2)Bloch Swimsuit Cover Up (view 1)
    View Product: Bloch Swimsuit Cover Up

    Bloch

    Swimsuit Cover Up
    Size 12
    $14.99 $11.24 25% off with code SHINE
    54% off estimated retail
    Tuga Rash Guard (view 2)Tuga Rash Guard (view 1)
    View Product: Tuga Rash Guard

    Tuga

    Rash Guard
    Size 13
    $16.99 $11.89 30% off with code SHINE
    58% off estimated retail
    Mirella One Piece Swimsuit (view 2)Mirella One Piece Swimsuit (view 1)
    View Product: Mirella One Piece Swimsuit

    Mirella

    One Piece Swimsuit
    Size 8
    $15.99 $12.79 20% off with code SHINE
    61% off estimated retail
    UV Skinz Rash Guard (view 2)UV Skinz Rash Guard (view 1)
    View Product: UV Skinz Rash Guard

    UV Skinz

    Rash Guard
    Size 3T
    $14.99 $11.24 25% off with code SHINE
    55% off estimated retail
    Vivo Biniya Rash Guard (view 2)Vivo Biniya Rash Guard (view 1)
    View Product: Vivo Biniya Rash Guard

    Vivo Biniya

    Rash Guard
    Size 11
    $19.99 $11.99 40% off with code SHINE
    39% off estimated retail
    Gerry Rash Guard (view 2)Gerry Rash Guard (view 1)
    View Product: Gerry Rash Guard

    Gerry

    Rash Guard
    Size X-Large youth
    $12.99 $9.74 25% off with code SHINE
    60% off estimated retail
    Little Peixoto Rash Guard (view 2)Little Peixoto Rash Guard (view 1)
    View Product: Little Peixoto Rash Guard

    Little Peixoto

    Rash Guard
    Size 2
    $16.99 $12.74 25% off with code SHINE
    61% 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 7
    $12.99 $9.74 25% off with code SHINE
    64% 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 12
    $20.99 $15.74 25% off with code SHINE
    74% 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
    $15.99 $11.19 30% off with code SHINE
    55% 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 6
    $26.99 $18.89 30% off with code SHINE
    53% off estimated retail
    Speedo One Piece Swimsuit (view 2)Speedo One Piece Swimsuit (view 1)New With Tags
    View Product: Speedo One Piece Swimsuit

    Speedo

    One Piece Swimsuit
    Size X-Large youth
    $18.99 $13.29 30% off with code SHINE
    24% 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 12-18 mo
    $12.99 $10.39 20% off with code SHINE
    51% off estimated retail
    Speedo Rash Guard (view 2)Speedo Rash Guard (view 1)
    View Product: Speedo Rash Guard

    Speedo

    Rash Guard
    Size 12-24 mo
    $12.99 $9.74 25% off with code SHINE
    18% 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 X-Large youth
    $12.99 $10.39 20% off with code SHINE
    35% off estimated retail
    Nike One Piece Swimsuit (view 2)Nike One Piece Swimsuit (view 1)
    View Product: Nike One Piece Swimsuit

    Nike

    One Piece Swimsuit
    Size 2
    $12.99 $10.39 20% off with code SHINE
    66% off estimated retail
    SO Rash Guard (view 2)SO Rash Guard (view 1)
    View Product: SO Rash Guard

    SO

    Rash Guard
    Size 10
    $13.99 $11.19 20% off with code SHINE
    44% 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 X-Large tots
    $14.99 $11.99 20% off with code SHINE
    44% off estimated retail
    Jerris Apparel Rash Guard (view 2)Jerris Apparel Rash Guard (view 1)
    View Product: Jerris Apparel Rash Guard

    Jerris Apparel

    Rash Guard
    Size Medium kids
    $15.99 $11.99 25% off with code SHINE
    40% off estimated retail
    SO One Piece Swimsuit (view 2)SO One Piece Swimsuit (view 1)
    View Product: SO One Piece Swimsuit

    SO

    One Piece Swimsuit
    Size 6
    $14.99 $11.99 20% off with code SHINE
    40% off estimated retail
    Egg by Susan Lazar One Piece Swimsuit (view 2)Egg by Susan Lazar One Piece Swimsuit (view 1)Price Drop
    View Product: Egg by Susan Lazar One Piece Swimsuit

    Egg by Susan Lazar

    One Piece Swimsuit
    Size 12 mo
    $16.99 $12.74 25% off with code SHINE
    22% 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 12
    $14.99 $11.24 25% off with code SHINE
    54% off estimated retail
    Assorted Brands Wetsuit (view 2)Assorted Brands Wetsuit (view 1)Price Drop
    View Product: Assorted Brands Wetsuit

    Assorted Brands

    Wetsuit
    Size X-Large youth
    $24.99 $19.99 20% off with code SHINE
    61% off estimated retail
    Les Tout Petits One Piece Swimsuit (view 2)Les Tout Petits One Piece Swimsuit (view 1)Price Drop
    View Product: Les Tout Petits One Piece Swimsuit

    Les Tout Petits

    One Piece Swimsuit
    Size 2
    $14.99 $11.24 25% off with code SHINE
    76% 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 X-Large kids
    $12.99 $10.39 20% off with code SHINE
    60% off estimated retail
    Assorted Brands Wetsuit (view 2)Assorted Brands Wetsuit (view 1)Price Drop
    View Product: Assorted Brands Wetsuit

    Assorted Brands

    Wetsuit
    Size 20
    $25.99 $20.79 20% off with code SHINE
    60% off estimated retail
    Appaman Swimsuit Cover Up (view 2)Appaman Swimsuit Cover Up (view 1)Price Drop
    View Product: Appaman Swimsuit Cover Up

    Appaman

    Swimsuit Cover Up
    Size 6
    $12.99 $9.74 25% off with code SHINE
    68% off estimated retail
    Tea Rash Guard (view 2)Tea Rash Guard (view 1)Price Drop
    View Product: Tea Rash Guard

    Tea

    Rash Guard
    Size 18
    $15.99 $11.99 25% off with code SHINE
    61% off estimated retail
    Kanu Surf Rash Guard (view 2)Kanu Surf Rash Guard (view 1)Price Drop
    View Product: Kanu Surf Rash Guard

    Kanu Surf

    Rash Guard
    Size X-Large kids
    $12.99 $10.39 20% off with code SHINE
    60% off estimated retail
    Snowflake Designs One Piece Swimsuit (view 2)Snowflake Designs One Piece Swimsuit (view 1)Price Drop
    View Product: Snowflake Designs One Piece Swimsuit

    Snowflake Designs

    One Piece Swimsuit
    Size Small kids
    $12.99 $10.39 20% off with code SHINE
    61% off estimated retail
    ZeroXposur Swimsuit Cover Up (view 2)ZeroXposur Swimsuit Cover Up (view 1)Price Drop
    View Product: ZeroXposur Swimsuit Cover Up

    ZeroXposur

    Swimsuit Cover Up
    Size 5
    $12.99 $9.74 25% off with code SHINE
    61% off estimated retail
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