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.

640 items
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    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 18-24 mo
    $8.99
    59% off estimated retail
    UV Skinz Two Piece Swimsuit (view 2)UV Skinz Two Piece Swimsuit (view 1)
    View Product: UV Skinz Two Piece Swimsuit

    UV Skinz

    Two Piece Swimsuit
    Size 12-18 mo
    $9.99
    63% 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 12-18 mo
    $8.99
    18% 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 5T
    $10.99
    35% off estimated retail
    The Edit. Forever Classic, Get perfectly polished in trousers, blazers, and more. Shop The Edit
    Lands' End Swimsuit Cover Up (view 2)Lands' End Swimsuit Cover Up (view 1)
    View Product: Lands' End Swimsuit Cover Up

    Lands' End

    Swimsuit Cover Up
    Size 10
    $22.99
    39% off estimated retail
    Peixoto Rash Guard (view 2)Peixoto Rash Guard (view 1)
    View Product: Peixoto Rash Guard

    Peixoto

    Rash Guard
    Size 10
    $30.99
    62% 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 5T
    $9.99
    41% off estimated retail
    Eddie Bauer Board Shorts (view 2)Eddie Bauer Board Shorts (view 1)
    View Product: Eddie Bauer Board Shorts

    Eddie Bauer

    Board Shorts
    Size 7
    $12.99
    40% off estimated retail
    The Children's Place Rash Guard (view 2)The Children's Place Rash Guard (view 1)
    View Product: The Children's Place Rash Guard
    Size 8
    $9.99
    37% 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 2T
    $8.99
    66% 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 2T
    $9.99
    63% 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 12 mo
    $9.99
    41% 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 12
    $12.99
    62% off estimated retail
    Little Me Two Piece Swimsuit (view 2)Little Me Two Piece Swimsuit (view 1)
    View Product: Little Me Two Piece Swimsuit

    Little Me

    Two Piece Swimsuit
    Size 4T
    $12.99
    60% off estimated retail
    The Children's Place Board Shorts (view 2)The Children's Place Board Shorts (view 1)
    View Product: The Children's Place Board Shorts
    Size 6
    $5.99
    45% 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 14
    $19.99
    39% 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 3T
    $18.99
    29% off estimated retail
    Vineyard Vines One Piece Swimsuit (view 2)Vineyard Vines One Piece Swimsuit (view 1)
    View Product: Vineyard Vines One Piece Swimsuit

    Vineyard Vines

    One Piece Swimsuit
    Size 5
    $13.99
    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 110 cm
    $25.99
    36% 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 Small youth
    $14.99
    54% 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 Large youth
    $16.99
    56% off estimated retail
    Maaji Board Shorts (view 2)Maaji Board Shorts (view 1)
    View Product: Maaji Board Shorts

    Maaji

    Board Shorts
    Size 8
    $16.99
    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 12
    $13.99
    57% 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 8
    $17.99
    33% 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 24 mo
    $16.99
    52% 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 3T
    $10.99
    15% off estimated retail
    Mud Pie One Piece Swimsuit (view 2)Mud Pie One Piece Swimsuit (view 1)New With Tags
    View Product: Mud Pie One Piece Swimsuit

    Mud Pie

    One Piece Swimsuit
    Size 4T
    $24.99
    47% off estimated retail
    Janie and Jack Two Piece Swimsuit (view 2)Janie and Jack Two Piece Swimsuit (view 1)
    View Product: Janie and Jack Two Piece Swimsuit

    Janie and Jack

    Two Piece Swimsuit
    Size 4
    $16.99
    59% off estimated retail
    Ruffle Butts Rash Guard (view 2)Ruffle Butts Rash Guard (view 1)
    View Product: Ruffle Butts Rash Guard

    Ruffle Butts

    Rash Guard
    Size 3T
    $7.99
    42% off estimated retail
    Mud Pie One Piece Swimsuit (view 2)Mud Pie One Piece Swimsuit (view 1)
    View Product: Mud Pie One Piece Swimsuit

    Mud Pie

    One Piece Swimsuit
    Size 0-3 mo
    $11.99
    45% 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
    $16.99
    37% 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 5
    $22.99
    43% off estimated retail
    Betsey Johnson One Piece Swimsuit (view 2)Betsey Johnson One Piece Swimsuit (view 1)
    View Product: Betsey Johnson One Piece Swimsuit

    Betsey Johnson

    One Piece Swimsuit
    Size 10
    $16.99
    58% off estimated retail
    I Play Two Piece Swimsuit (view 2)I Play Two Piece Swimsuit (view 1)
    View Product: I Play Two Piece Swimsuit

    I Play

    Two Piece Swimsuit
    Size 12 mo
    $10.99 $11
    Penny M. One Piece Swimsuit (view 2)Penny M. One Piece Swimsuit (view 1)New With Tags
    View Product: Penny M. One Piece Swimsuit

    Penny M.

    One Piece Swimsuit
    Size 12 mo
    $8.99
    18% 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
    $9.99
    44% off estimated retail
    Assorted Brands Wetsuit (view 2)Assorted Brands Wetsuit (view 1)
    View Product: Assorted Brands Wetsuit
    Size 0-3 mo
    $19.99
    54% off estimated retail
    Baby Wear One Piece Swimsuit (view 2)Baby Wear One Piece Swimsuit (view 1)
    View Product: Baby Wear One Piece Swimsuit

    Baby Wear

    One Piece Swimsuit
    Size 24 mo
    $11.99
    25% off estimated retail
    Lands' End Board Shorts (view 2)Lands' End Board Shorts (view 1)
    View Product: Lands' End Board Shorts

    Lands' End

    Board Shorts
    Size 10
    $9.99
    54% off estimated retail
    Gap Kids Two Piece Swimsuit (view 2)Gap Kids Two Piece Swimsuit (view 1)
    View Product: Gap Kids Two Piece Swimsuit

    Gap Kids

    Two Piece Swimsuit
    Size 2X-large kids
    $14.99
    53% 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
    $9.99
    41% 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 3T
    $10.99
    63% 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
    $15.99
    52% 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
    $11.99
    55% 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 X-Small kids
    $12.99
    51% 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 3T
    $8.99
    35% off estimated retail
    Miles One Piece Swimsuit (view 2)Miles One Piece Swimsuit (view 1)
    View Product: Miles One Piece Swimsuit

    Miles

    One Piece Swimsuit
    Size 4
    $16.99
    50% 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
    $13.99
    17% off estimated retail
    Cabana Life One Piece Swimsuit (view 2)Cabana Life One Piece Swimsuit (view 1)
    View Product: Cabana Life One Piece Swimsuit

    Cabana Life

    One Piece Swimsuit
    Size 12
    $19.99
    69% 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 Small infants
    $8.99
    59% off estimated retail
    Snapper Rock Rash Guard (view 2)Snapper Rock Rash Guard (view 1)
    View Product: Snapper Rock Rash Guard

    Snapper Rock

    Rash Guard
    Size 24 mo
    $8.99
    43% 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 140 cm
    $24.99
    39% off estimated retail
    Ralph Lauren One Piece Swimsuit (view 2)Ralph Lauren One Piece Swimsuit (view 1)
    View Product: Ralph Lauren One Piece Swimsuit

    Ralph Lauren

    One Piece Swimsuit
    Size 24 mo
    $13.99
    73% 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 3T
    $15.99
    59% 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 5T
    $8.99
    35% 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 mo
    $11.99
    55% off estimated retail
    Janie and Jack One Piece Swimsuit (view 2)Janie and Jack One Piece Swimsuit (view 1)New With Tags
    View Product: Janie and Jack One Piece Swimsuit

    Janie and Jack

    One Piece Swimsuit
    Size 18-24 mo
    $17.99
    57% off estimated retail
    UV Skinz Wetsuit (view 2)UV Skinz Wetsuit (view 1)
    View Product: UV Skinz Wetsuit

    UV Skinz

    Wetsuit
    Size 18-24 mo
    $20.99
    61% 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 9 mo
    $9.99
    41% 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
    55% off estimated retail
    Wonder Nation Rash Guard (view 2)Wonder Nation Rash Guard (view 1)
    View Product: Wonder Nation Rash Guard

    Wonder Nation

    Rash Guard
    Size Medium kids
    $10.99
    21% off estimated retail
    Lilly Pulitzer One Piece Swimsuit (view 2)Lilly Pulitzer One Piece Swimsuit (view 1)
    View Product: Lilly Pulitzer One Piece Swimsuit

    Lilly Pulitzer

    One Piece Swimsuit
    Size 12
    $29.99
    38% off estimated retail
    Disney Two Piece Swimsuit (view 2)Disney Two Piece Swimsuit (view 1)
    View Product: Disney Two Piece Swimsuit

    Disney

    Two Piece Swimsuit
    Size 3
    $10.99
    21% off estimated retail
    Disney Rash Guard (view 2)Disney Rash Guard (view 1)
    View Product: Disney Rash Guard

    Disney

    Rash Guard
    Size 3
    $7.99
    42% off estimated retail
    Floatimini Rash Guard (view 2)Floatimini Rash Guard (view 1)
    View Product: Floatimini Rash Guard

    Floatimini

    Rash Guard
    Size 3T
    $19.99
    70% 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 80 cm
    $9.99
    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 90 cm
    $13.99
    36% off estimated retail
    Monica + Andy One Piece Swimsuit (view 2)Monica + Andy One Piece Swimsuit (view 1)
    View Product: Monica + Andy One Piece Swimsuit

    Monica + Andy

    One Piece Swimsuit
    Size 6-12 mo
    $12.99
    40% off estimated retail
    Pink Chicken One Piece Swimsuit (view 2)Pink Chicken One Piece Swimsuit (view 1)
    View Product: Pink Chicken One Piece Swimsuit

    Pink Chicken

    One Piece Swimsuit
    Size 6-12 mo
    $13.99
    68% off estimated retail
    Platinum One Piece Swimsuit (view 2)Platinum One Piece Swimsuit (view 1)New With Tags
    View Product: Platinum One Piece Swimsuit

    Platinum

    One Piece Swimsuit
    Size 14
    $34.99
    56% off estimated retail
    Ruffle Butts Rash Guard (view 2)Ruffle Butts Rash Guard (view 1)
    View Product: Ruffle Butts Rash Guard

    Ruffle Butts

    Rash Guard
    Size 18-24 mo
    $7.99
    27% 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 6
    $26.99
    34% 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 16
    $18.99
    42% off estimated retail
    Little Rhona One Piece Swimsuit (view 2)Little Rhona One Piece Swimsuit (view 1)
    View Product: Little Rhona One Piece Swimsuit

    Little Rhona

    One Piece Swimsuit
    Size 4T
    $30.99
    62% off estimated retail
    Catherine Malandrino One Piece Swimsuit (view 2)Catherine Malandrino One Piece Swimsuit (view 1)
    View Product: Catherine Malandrino One Piece Swimsuit

    Catherine Malandrino

    One Piece Swimsuit
    Size 10
    $25.99
    86% 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 150 cm
    $14.99
    54% 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 2T
    $9.99
    54% off estimated retail
    Columbia Rash Guard (view 2)Columbia Rash Guard (view 1)
    View Product: Columbia Rash Guard

    Columbia

    Rash Guard
    Size Medium youth
    $14.99
    54% 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
    $11.99
    29% 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 Small kids
    $14.99
    44% 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 Large youth

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