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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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    Vineyard Vines Rash Guard (view 2)Vineyard Vines Rash Guard (view 1)
    View Product: Vineyard Vines Rash Guard

    Vineyard Vines

    Rash Guard
    Size 4T
    $13.99 $7.69 45% off with code GOBIG
    58% 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 10
    $24.99 $13.74 45% off with code GOBIG
    39% off estimated retail
    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 2
    $22.99 $12.64 45% off with code GOBIG
    39% off estimated retail
    Ocean Drive Clothing Co. Rash Guard (view 2)Ocean Drive Clothing Co. Rash Guard (view 1)
    View Product: Ocean Drive Clothing Co. Rash Guard

    Ocean Drive Clothing Co.

    Rash Guard
    Size 5T
    $14.99 $8.24 45% off with code GOBIG
    44% 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)
    View Product: Unbranded One Piece Swimsuit

    Unbranded

    One Piece Swimsuit
    Size 90 cm
    $11.99 $6.59 45% off with code GOBIG
    45% off estimated retail
    Kate Spade New York Rash Guard (view 2)Kate Spade New York Rash Guard (view 1)
    View Product: Kate Spade New York Rash Guard

    Kate Spade New York

    Rash Guard
    Size 24 mo
    $16.99 $9.34 45% off with code GOBIG
    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 3T
    $8.99 $4.94 45% off with code GOBIG
    47% off estimated retail
    Tommy Bahama One Piece Swimsuit (view 2)Tommy Bahama One Piece Swimsuit (view 1)
    View Product: Tommy Bahama One Piece Swimsuit

    Tommy Bahama

    One Piece Swimsuit
    Size 10
    $14.99 $8.24 45% off with code GOBIG
    63% off estimated retail
    OshKosh B'gosh One Piece Swimsuit (view 2)OshKosh B'gosh One Piece Swimsuit (view 1)
    View Product: OshKosh B'gosh One Piece Swimsuit

    OshKosh B'gosh

    One Piece Swimsuit
    Size 6-9 mo
    $14.99 $8.24 45% off with code GOBIG
    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 18-24 mo
    $12.99 $7.14 45% off with code GOBIG
    27% 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 5
    $10.99 $6.04 45% off with code GOBIG
    59% off estimated retail
    Sol Swim Rash Guard (view 2)Sol Swim Rash Guard (view 1)
    View Product: Sol Swim Rash Guard

    Sol Swim

    Rash Guard
    Size 12 mo
    $9.99 $5.49 45% off with code GOBIG
    54% 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
    $8.99 $4.94 45% off with code GOBIG
    35% 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
    $17.99 $9.89 45% off with code GOBIG
    51% 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 6-9 mo
    $13.99 $7.69 45% off with code GOBIG
    36% 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
    $8.99 $4.94 45% off with code GOBIG
    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 9 mo
    $12.99 $7.14 45% off with code GOBIG
    23% 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 $18.14 45% off with code GOBIG
    59% 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 $5.49 45% off with code GOBIG
    41% off estimated retail
    Stella McCartney One Piece Swimsuit (view 2)Stella McCartney One Piece Swimsuit (view 1)
    View Product: Stella McCartney One Piece Swimsuit

    Stella McCartney

    One Piece Swimsuit
    Size 24 mo
    $20.99 $11.54 45% off with code GOBIG
    75% off estimated retail
    Hope & Henry One Piece Swimsuit (view 2)Hope & Henry One Piece Swimsuit (view 1)
    View Product: Hope & Henry One Piece Swimsuit

    Hope & Henry

    One Piece Swimsuit
    Size 2T
    $14.99 $8.24 45% off with code GOBIG
    31% off estimated retail
    Penelope Mack One Piece Swimsuit (view 2)Penelope Mack One Piece Swimsuit (view 1)
    View Product: Penelope Mack One Piece Swimsuit

    Penelope Mack

    One Piece Swimsuit
    Size 3T
    $13.99 $7.69 45% off with code GOBIG
    48% off estimated retail
    Crew & Lu One Piece Swimsuit (view 2)Crew & Lu One Piece Swimsuit (view 1)
    View Product: Crew & Lu One Piece Swimsuit

    Crew & Lu

    One Piece Swimsuit
    Size 12-18 mo
    $16.99 $9.34 45% off with code GOBIG
    69% off estimated retail
    Capezio One Piece Swimsuit (view 2)Capezio One Piece Swimsuit (view 1)
    View Product: Capezio One Piece Swimsuit

    Capezio

    One Piece Swimsuit
    Size Small youth
    $12.99 $7.14 45% off with code GOBIG
    48% off estimated retail
    Andy & Evan One Piece Swimsuit (view 2)Andy & Evan One Piece Swimsuit (view 1)
    View Product: Andy & Evan One Piece Swimsuit

    Andy & Evan

    One Piece Swimsuit
    Size 3-6 mo
    $14.99 $8.24 45% off with code GOBIG
    72% 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
    $14.99 $8.24 45% off with code GOBIG
    16% off estimated retail
    Stitchy Fish Two Piece Swimsuit (view 2)Stitchy Fish Two Piece Swimsuit (view 1)
    View Product: Stitchy Fish Two Piece Swimsuit

    Stitchy Fish

    Two Piece Swimsuit
    Size 18-24 mo
    $19.99 $10.99 45% off with code GOBIG
    54% 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 3 mo
    $10.99 $6.04 45% off with code GOBIG
    63% 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 9 mo
    $9.99 $5.49 45% off with code GOBIG
    61% off estimated retail
    Gap Rash Guard (view 2)Gap Rash Guard (view 1)Price Drop
    View Product: Gap Rash Guard

    Gap

    Rash Guard
    Size 6-12 mo
    $9.99 $5.49 45% off with code GOBIG
    52% 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
    $10.99 $6.04 45% off with code GOBIG
    50% 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 3-6 mo
    $21.99 $12.09 45% off with code GOBIG
    46% off estimated retail
    Old Navy Board Shorts (view 2)Old Navy Board Shorts (view 1)
    View Product: Old Navy Board Shorts

    Old Navy

    Board Shorts
    Size 2T
    $10.99 $6.04 45% off with code GOBIG
    21% off estimated retail
    Carter's Rash Guard (view 2)Carter's Rash Guard (view 1)Price Drop
    View Product: Carter's Rash Guard

    Carter's

    Rash Guard
    Size 18 mo
    $12.99 $7.14 45% off with code GOBIG
    50% 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 18 mo
    $8.99 $4.94 45% off with code GOBIG
    59% off estimated retail
    The Children's Place One Piece Swimsuit (view 2)The Children's Place One Piece Swimsuit (view 1)Price Drop
    View Product: The Children's Place One Piece Swimsuit

    The Children's Place

    One Piece Swimsuit
    Size Medium infants
    $8.99 $4.94 45% off with code GOBIG
    50% off estimated retail
    Hatley One Piece Swimsuit (view 2)Hatley One Piece Swimsuit (view 1)Price Drop
    View Product: Hatley One Piece Swimsuit

    Hatley

    One Piece Swimsuit
    Size 3 mo
    $10.99 $6.04 45% off with code GOBIG
    59% off estimated retail
    Eddie Bauer Rash Guard (view 2)Eddie Bauer Rash Guard (view 1)Price Drop
    View Product: Eddie Bauer Rash Guard

    Eddie Bauer

    Rash Guard
    Size 10
    $10.99 $6.04 45% off with code GOBIG
    66% off estimated retail
    GB Girls Two Piece Swimsuit (view 2)GB Girls Two Piece Swimsuit (view 1)Price Drop
    View Product: GB Girls Two Piece Swimsuit

    GB Girls

    Two Piece Swimsuit
    Size 12
    $9.99 $5.49 45% off with code GOBIG
    69% off estimated retail
    Sofibella Rash Guard (view 2)Sofibella Rash Guard (view 1)Price Drop
    View Product: Sofibella Rash Guard

    Sofibella

    Rash Guard
    Size Small youth
    $9.99 $5.49 45% off with code GOBIG
    84% 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 6X
    $9.99 $5.49 45% off with code GOBIG
    50% off estimated retail
    Assorted Brands Swimsuit Cover Up (view 2)Assorted Brands Swimsuit Cover Up (view 1)Price Drop
    View Product: Assorted Brands Swimsuit Cover Up

    Assorted Brands

    Swimsuit Cover Up
    Size 2
    $9.99 $5.49 45% off with code GOBIG
    54% off estimated retail
    Gap Kids Swimsuit Cover Up (view 2)Gap Kids Swimsuit Cover Up (view 1)Price Drop
    View Product: Gap Kids Swimsuit Cover Up

    Gap Kids

    Swimsuit Cover Up
    Size Small infants
    $9.99 $5.49 45% off with code GOBIG
    73% off estimated retail
    Little Me One Piece Swimsuit (view 2)Little Me One Piece Swimsuit (view 1)Price Drop
    View Product: Little Me One Piece Swimsuit

    Little Me

    One Piece Swimsuit
    Size 18 mo
    $9.99 $5.49 45% off with code GOBIG
    37% off estimated retail
    Kate Mack Two Piece Swimsuit (view 2)Kate Mack Two Piece Swimsuit (view 1)Price Drop
    View Product: Kate Mack Two Piece Swimsuit

    Kate Mack

    Two Piece Swimsuit
    Size 6 mo
    $9.99 $5.49 45% off with code GOBIG
    54% off estimated retail
    Rorychen One Piece Swimsuit (view 2)Rorychen One Piece Swimsuit (view 1)Price Drop
    View Product: Rorychen One Piece Swimsuit

    Rorychen

    One Piece Swimsuit
    Size 80 cm
    $9.99 $5.49 45% off with code GOBIG
    $11
    Silly Goose Swimsuit Cover Up (view 2)Silly Goose Swimsuit Cover Up (view 1)
    View Product: Silly Goose Swimsuit Cover Up

    Silly Goose

    Swimsuit Cover Up
    Size 6
    $9.99 $5.49 45% off with code GOBIG
    69% 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
    $8.99 $4.94 45% off with code GOBIG
    71% off estimated retail
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