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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.

2Remove filter9-12 moRemove filter
39 items
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    Disney Store Two Piece Swimsuit (view 2)Disney Store Two Piece Swimsuit (view 1)
    View Product: Disney Store Two Piece Swimsuit

    Disney Store

    Two Piece Swimsuit
    Size 2
    $8.99
    35% 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
    $9.99
    54% 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 2
    $6.99
    46% off estimated retail
    JoJo Maman Bebe One Piece Swimsuit (view 2)JoJo Maman Bebe One Piece Swimsuit (view 1)
    View Product: JoJo Maman Bebe One Piece Swimsuit

    JoJo Maman Bebe

    One Piece Swimsuit
    Size 2
    $12.99
    66% off estimated retail
    The Edit. Forever Classic, Get perfectly polished in trousers, blazers, and more. Shop The Edit
    Elowel One Piece Swimsuit (view 2)Elowel One Piece Swimsuit (view 1)
    View Product: Elowel One Piece Swimsuit

    Elowel

    One Piece Swimsuit
    Size 2
    $8.99 $7.19 20% off with code HOTDEAL
    27% 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
    $13.99 $11.19 20% off with code HOTDEAL
    55% 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
    $25.99 $18.19 30% off with code HOTDEAL
    39% off estimated retail
    Zimmermann One Piece Swimsuit (view 2)Zimmermann One Piece Swimsuit (view 1)
    View Product: Zimmermann One Piece Swimsuit

    Zimmermann

    One Piece Swimsuit
    Size 2
    $78.99 $59.24 25% off with code HOTDEAL
    34% off estimated retail
    Tea Rash Guard (view 2)Tea Rash Guard (view 1)
    View Product: Tea Rash Guard

    Tea

    Rash Guard
    Size 9-12 mo
    $17.99 $12.59 30% off with code HOTDEAL
    44% 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 2
    $11.99 $9.59 20% off with code HOTDEAL
    21% 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 2
    $9.99 $7.99 20% off with code HOTDEAL
    59% 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 2
    $17.99 $13.49 25% off with code HOTDEAL
    44% off estimated retail
    PatPat One Piece Swimsuit (view 2)PatPat One Piece Swimsuit (view 1)
    View Product: PatPat One Piece Swimsuit

    PatPat

    One Piece Swimsuit
    Size 2
    $10.99 $8.79 20% off with code HOTDEAL
    $11
    Gymboree One Piece Swimsuit (view 2)Gymboree One Piece Swimsuit (view 1)
    View Product: Gymboree One Piece Swimsuit

    Gymboree

    One Piece Swimsuit
    Size 2
    $22.99 $18.39 20% off with code HOTDEAL
    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 2
    $9.99 $7.99 20% off with code HOTDEAL
    59% off estimated retail
    Unbranded Rash Guard (view 2)Unbranded Rash Guard (view 1)
    View Product: Unbranded Rash Guard

    Unbranded

    Rash Guard
    Size 2
    $11.99 $9.59 20% off with code HOTDEAL
    50% 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
    $18.99 $14.24 25% off with code HOTDEAL
    61% off estimated retail
    Peixoto Two Piece Swimsuit (view 2)Peixoto Two Piece Swimsuit (view 1)
    View Product: Peixoto Two Piece Swimsuit

    Peixoto

    Two Piece Swimsuit
    Size 2
    $25.99 $20.79 20% off with code HOTDEAL
    61% off estimated retail
    Peixoto Two Piece Swimsuit (view 2)Peixoto Two Piece Swimsuit (view 1)
    View Product: Peixoto Two Piece Swimsuit

    Peixoto

    Two Piece Swimsuit
    Size 2
    $23.99 $19.19 20% off with code HOTDEAL
    61% off estimated retail
    Hunter Rash Guard (view 2)Hunter Rash Guard (view 1)
    View Product: Hunter Rash Guard

    Hunter

    Rash Guard
    Size 2
    $13.99 $11.19 20% off with code HOTDEAL
    74% off estimated retail
    Creamie One Piece Swimsuit (view 2)Creamie One Piece Swimsuit (view 1)
    View Product: Creamie One Piece Swimsuit

    Creamie

    One Piece Swimsuit
    Size 2
    $19.99 $14.99 25% off with code HOTDEAL
    45% off estimated retail
    Nike One Piece Swimsuit (view 2)Nike One Piece Swimsuit (view 1)Price Drop
    View Product: Nike One Piece Swimsuit

    Nike

    One Piece Swimsuit
    Size 2
    $14.99 $11.99 20% off with code HOTDEAL
    66% off estimated retail
    Mud Pie One Piece Swimsuit (view 2)Mud Pie One Piece Swimsuit (view 1)Price Drop
    View Product: Mud Pie One Piece Swimsuit

    Mud Pie

    One Piece Swimsuit
    Size 9-12 mo
    $12.99 $10.39 20% off with code HOTDEAL
    45% off estimated retail
    Snapper Rock Wetsuit (view 2)Snapper Rock Wetsuit (view 1)
    View Product: Snapper Rock Wetsuit

    Snapper Rock

    Wetsuit
    Size 2
    $23.99 $17.99 25% off with code HOTDEAL
    39% off estimated retail
    Tea One Piece Swimsuit (view 2)Tea One Piece Swimsuit (view 1)Price Drop
    View Product: Tea One Piece Swimsuit

    Tea

    One Piece Swimsuit
    Size 9-12 mo
    $22.99 $17.24 25% off with code HOTDEAL
    60% 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 2
    $10.99 $7.14 35% off with code HOTDEAL
    37% 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
    $16.99 $10.19 40% off with code HOTDEAL
    76% off estimated retail
    Crewcuts One Piece Swimsuit (view 2)Crewcuts One Piece Swimsuit (view 1)Price Drop
    View Product: Crewcuts One Piece Swimsuit

    Crewcuts

    One Piece Swimsuit
    Size 2
    $12.99 $7.79 40% off with code HOTDEAL
    66% off estimated retail
    Little Peixoto Two Piece Swimsuit (view 2)Little Peixoto Two Piece Swimsuit (view 1)Price Drop
    View Product: Little Peixoto Two Piece Swimsuit

    Little Peixoto

    Two Piece Swimsuit
    Size 2
    $17.99 $9.89 45% off with code HOTDEAL
    68% 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 2
    $11.99 $7.19 40% off with code HOTDEAL
    37% 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 2
    $13.24 $7.94 40% off with code HOTDEAL
    50% off estimated retail
    Beau Loves One Piece Swimsuit (view 2)Beau Loves One Piece Swimsuit (view 1)Price Drop
    View Product: Beau Loves One Piece Swimsuit

    Beau Loves

    One Piece Swimsuit
    Size 2
    $13.99 $8.39 40% off with code HOTDEAL
    66% off estimated retail
    Tea One Piece Swimsuit (view 2)Tea One Piece Swimsuit (view 1)Price Drop
    View Product: Tea One Piece Swimsuit

    Tea

    One Piece Swimsuit
    Size 2
    $15.99 $8.79 45% off with code HOTDEAL
    77% off estimated retail
    98 Coast Av. Two Piece Swimsuit (view 2)98 Coast Av. Two Piece Swimsuit (view 1)Price Drop
    View Product: 98 Coast Av. Two Piece Swimsuit

    98 Coast Av.

    Two Piece Swimsuit
    Size 2
    $17.99 $10.79 40% off with code HOTDEAL
    84% 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 2
    $14.24 $8.54 40% off with code HOTDEAL
    59% off estimated retail
    Disney One Piece Swimsuit (view 2)Disney One Piece Swimsuit (view 1)Price Drop
    View Product: Disney One Piece Swimsuit

    Disney

    One Piece Swimsuit
    Size 9-12 mo
    $11.99 $7.19 40% off with code HOTDEAL
    52% 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 2
    $11.24 $6.74 40% off with code HOTDEAL
    43% off estimated retail
    Unbranded Rash Guard (view 2)Unbranded Rash Guard (view 1)Price Drop
    View Product: Unbranded Rash Guard

    Unbranded

    Rash Guard
    Size 2
    $12.24 $7.34 40% off with code HOTDEAL
    54% off estimated retail
    Disney One Piece Swimsuit (view 2)Disney One Piece Swimsuit (view 1)Price Drop
    View Product: Disney One Piece Swimsuit

    Disney

    One Piece Swimsuit
    Size 2
    $14.24 $8.54 40% off with code HOTDEAL
    52% off estimated retail
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