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Shop Women's Swimwear at up to 90% off estimated retail! thredUP has a huge selection of gently used women's swimwear. Find bikinis, one-pieces, board shorts and cover ups from brands like Seafolly, Aqua or Speedo at thredUP.

28" WaistRemove filter
19 items
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    Wild Fable Swimsuit Bottoms (view 2)Wild Fable Swimsuit Bottoms (view 1)New With Tags
    View Product: Wild Fable Swimsuit Bottoms

    Wild Fable

    Swimsuit Bottoms
    Size 00
    $18.99
    40% off estimated retail
    Kitty and Vibe Swimsuit Bottoms (view 2)Kitty and Vibe Swimsuit Bottoms (view 1)
    View Product: Kitty and Vibe Swimsuit Bottoms

    Kitty and Vibe

    Swimsuit Bottoms
    Size 00
    $19.99
    47% off estimated retail
    J.Crew One Piece Swimsuit (view 2)J.Crew One Piece Swimsuit (view 1)
    View Product: J.Crew One Piece Swimsuit

    J.Crew

    One Piece Swimsuit
    Size 00
    $32.99
    74% off estimated retail
    Good American Swimsuit Top (view 2)Good American Swimsuit Top (view 1)
    View Product: Good American Swimsuit Top

    Good American

    Swimsuit Top
    Size 00
    $24.99
    75% off estimated retail
    The Edit. Forever Classic, Get perfectly polished in trousers, blazers, and more. Shop The Edit
    Good American One Piece Swimsuit (view 2)Good American One Piece Swimsuit (view 1)New With Tags
    View Product: Good American One Piece Swimsuit

    Good American

    One Piece Swimsuit
    Size 00
    $75.99
    23% off estimated retail
    Athleta Swimsuit Top (view 2)Athleta Swimsuit Top (view 1)
    View Product: Athleta Swimsuit Top

    Athleta

    Swimsuit Top
    Size 00
    $24.99
    57% off estimated retail
    J.Crew One Piece Swimsuit (view 2)J.Crew One Piece Swimsuit (view 1)
    View Product: J.Crew One Piece Swimsuit

    J.Crew

    One Piece Swimsuit
    Size 00
    $28.99
    77% off estimated retail
    Gap Board Shorts (view 2)Gap Board Shorts (view 1)
    View Product: Gap Board Shorts

    Gap

    Board Shorts
    Size 00
    $10.99 $8.24 25% off with code HOTDEAL
    71% off estimated retail
    Unbranded Board Shorts (view 2)Unbranded Board Shorts (view 1)
    View Product: Unbranded Board Shorts

    Unbranded

    Board Shorts
    Size 00
    $13.99 $9.79 30% off with code HOTDEAL
    44% off estimated retail
    Undercover Swimsuit Cover Up (view 2)Undercover Swimsuit Cover Up (view 1)
    View Product: Undercover Swimsuit Cover Up

    Undercover

    Swimsuit Cover Up
    Size 00
    $50.99 $30.59 40% off with code HOTDEAL
    77% off estimated retail
    Wild Fable Swimsuit Top (view 2)Wild Fable Swimsuit Top (view 1)New With Tags
    View Product: Wild Fable Swimsuit Top

    Wild Fable

    Swimsuit Top
    Size 00
    $7.99 $6.39 20% off with code HOTDEAL
    50% off estimated retail
    Good American One Piece Swimsuit (view 2)Good American One Piece Swimsuit (view 1)Price Drop
    View Product: Good American One Piece Swimsuit

    Good American

    One Piece Swimsuit
    Size 00
    $40.99 $24.59 40% off with code HOTDEAL
    73% off estimated retail
    Good American One Piece Swimsuit (view 2)Good American One Piece Swimsuit (view 1)
    View Product: Good American One Piece Swimsuit

    Good American

    One Piece Swimsuit
    Size 00
    $50.99 $28.04 45% off with code HOTDEAL
    66% off estimated retail
    Good American Swimsuit Bottoms (view 2)Good American Swimsuit Bottoms (view 1)Price Drop
    View Product: Good American Swimsuit Bottoms

    Good American

    Swimsuit Bottoms
    Size 00
    $27.99 $12.60 55% off with code HOTDEAL
    74% off estimated retail
    Seafolly Swimsuit Top (view 2)Seafolly Swimsuit Top (view 1)New With Tags
    View Product: Seafolly Swimsuit Top

    Seafolly

    Swimsuit Top
    Size 00
    $28.99 $11.60 60% off with code HOTDEAL
    78% off estimated retail
    Ann Taylor LOFT Board Shorts (view 2)Ann Taylor LOFT Board Shorts (view 1)Price Drop
    View Product: Ann Taylor LOFT Board Shorts

    Ann Taylor LOFT

    Board Shorts
    Size 00
    $14.99 $7.50 50% off with code HOTDEAL
    75% 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 00
    $16.99 $8.50 50% off with code HOTDEAL
    68% off estimated retail
    Xhilaration Swimsuit Top (view 2)Xhilaration Swimsuit Top (view 1)Price Drop
    View Product: Xhilaration Swimsuit Top

    Xhilaration

    Swimsuit Top
    Size 00
    $6.99 $4.19 40% off with code HOTDEAL
    46% off estimated retail
    Venus Swimsuit Top (view 2)Venus Swimsuit Top (view 1)Price Drop
    View Product: Venus Swimsuit Top

    Venus

    Swimsuit Top
    Size 00
    $13.24 $7.28 45% off with code HOTDEAL
    52% off estimated retail
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