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.

320 items
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    Shein Swimsuit Top (view 2)Shein Swimsuit Top (view 1)
    View Product: Shein Swimsuit Top

    Shein

    Swimsuit Top
    Size 0X Plus
    $13.99
    12% off estimated retail
    Shein Swimsuit Top (view 2)Shein Swimsuit Top (view 1)
    View Product: Shein Swimsuit Top

    Shein

    Swimsuit Top
    Size 0X Plus
    $13.99
    12% off estimated retail
    Sonnet Shores Swimsuit Cover Up (view 2)Sonnet Shores Swimsuit Cover Up (view 1)
    View Product: Sonnet Shores Swimsuit Cover Up

    Sonnet Shores

    Swimsuit Cover Up
    Size 0X Plus
    $25.99
    72% off estimated retail
    Brandini One Piece Swimsuit (view 2)Brandini One Piece Swimsuit (view 1)New With Tags
    View Product: Brandini One Piece Swimsuit

    Brandini

    One Piece Swimsuit
    Size 30 Plus
    $13.99
    26% off estimated retail
    The Edit. Forever Classic, Get perfectly polished in trousers, blazers, and more. Shop The Edit
    Assorted Brands Swimsuit Top (view 2)Assorted Brands Swimsuit Top (view 1)
    View Product: Assorted Brands Swimsuit Top

    Assorted Brands

    Swimsuit Top
    Size 0X Plus
    $12.99
    48% off estimated retail
    Assorted Brands Swimsuit Bottoms (view 2)Assorted Brands Swimsuit Bottoms (view 1)
    View Product: Assorted Brands Swimsuit Bottoms

    Assorted Brands

    Swimsuit Bottoms
    Size 0X Plus
    $13.99
    44% off estimated retail
    Becca Swimsuit Bottoms (view 2)Becca Swimsuit Bottoms (view 1)
    View Product: Becca Swimsuit Bottoms

    Becca

    Swimsuit Bottoms
    Size 0X Plus
    $18.99
    50% off estimated retail
    SKYE Swimsuit Bottoms (view 2)SKYE Swimsuit Bottoms (view 1)New With Tags
    View Product: SKYE Swimsuit Bottoms

    SKYE

    Swimsuit Bottoms
    Size 0X Plus
    $36.99
    67% off estimated retail
    Sunsets Swimsuit Top (view 2)Sunsets Swimsuit Top (view 1)
    View Product: Sunsets Swimsuit Top

    Sunsets

    Swimsuit Top
    Size 0X Plus
    $21.99
    42% off estimated retail
    Kona Sol Swimsuit Top (view 2)Kona Sol Swimsuit Top (view 1)
    View Product: Kona Sol Swimsuit Top

    Kona Sol

    Swimsuit Top
    Size 0X Plus
    $18.99
    24% off estimated retail
    Costa del Sol Swimsuit Bottoms (view 2)Costa del Sol Swimsuit Bottoms (view 1)New With Tags
    View Product: Costa del Sol Swimsuit Bottoms

    Costa del Sol

    Swimsuit Bottoms
    Size 0X Plus
    $12.99
    31% off estimated retail
    Zaful Swimsuit Bottoms (view 2)Zaful Swimsuit Bottoms (view 1)
    View Product: Zaful Swimsuit Bottoms

    Zaful

    Swimsuit Bottoms
    Size 0X Plus
    $16.99
    32% 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 30 Plus
    $18.99
    50% off estimated retail
    Unbranded Swimsuit Top (view 2)Unbranded Swimsuit Top (view 1)
    View Product: Unbranded Swimsuit Top

    Unbranded

    Swimsuit Top
    Size 0X Plus
    $11.99
    52% off estimated retail
    Avenue Swimsuit Bottoms (view 2)Avenue Swimsuit Bottoms (view 1)
    View Product: Avenue Swimsuit Bottoms

    Avenue

    Swimsuit Bottoms
    Size 30 Plus
    $14.99
    53% 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 0X Plus
    $13.99
    63% off estimated retail
    Unbranded Swimsuit Bottoms (view 2)Unbranded Swimsuit Bottoms (view 1)
    View Product: Unbranded Swimsuit Bottoms

    Unbranded

    Swimsuit Bottoms
    Size 0X Plus
    $15.99
    36% off estimated retail
    Shein One Piece Swimsuit (view 2)Shein One Piece Swimsuit (view 1)
    View Product: Shein One Piece Swimsuit

    Shein

    One Piece Swimsuit
    Size 0X Plus
    Shein Swimsuit Bottoms (view 2)Shein Swimsuit Bottoms (view 1)
    View Product: Shein Swimsuit Bottoms

    Shein

    Swimsuit Bottoms
    Size 0X Plus
    $7.99 $6.39 20% off with code THANKU
    50% off estimated retail
    Shein Swimsuit Bottoms (view 2)Shein Swimsuit Bottoms (view 1)
    View Product: Shein Swimsuit Bottoms

    Shein

    Swimsuit Bottoms
    Size 0X Plus
    $8.99 $7.19 20% off with code THANKU
    43% off estimated retail
    Shein Swimsuit Cover Up (view 2)Shein Swimsuit Cover Up (view 1)
    View Product: Shein Swimsuit Cover Up

    Shein

    Swimsuit Cover Up
    Size 0X Plus
    Shein Swimsuit Bottoms (view 2)Shein Swimsuit Bottoms (view 1)
    View Product: Shein Swimsuit Bottoms

    Shein

    Swimsuit Bottoms
    Size 0X Plus
    Shein Swimsuit Bottoms (view 2)Shein Swimsuit Bottoms (view 1)
    View Product: Shein Swimsuit Bottoms

    Shein

    Swimsuit Bottoms
    Size 0X Plus
    Shein Two Piece Swimsuit (view 2)Shein Two Piece Swimsuit (view 1)
    View Product: Shein Two Piece Swimsuit

    Shein

    Two Piece Swimsuit
    Size 0X Plus
    Unbranded Swimsuit Top (view 2)Unbranded Swimsuit Top (view 1)
    View Product: Unbranded Swimsuit Top

    Unbranded

    Swimsuit Top
    Size 0X Plus
    $3.99
    84% off estimated retail
    ViX Swimsuit Top (view 2)ViX Swimsuit Top (view 1)
    View Product: ViX Swimsuit Top

    ViX

    Swimsuit Top
    Size 0X Plus
    Shein Swimsuit Bottoms (view 2)Shein Swimsuit Bottoms (view 1)
    View Product: Shein Swimsuit Bottoms

    Shein

    Swimsuit Bottoms
    Size 0X Plus
    $8.99 $7.19 20% off with code THANKU
    43% off estimated retail
    Shein Swimsuit Cover Up (view 2)Shein Swimsuit Cover Up (view 1)
    View Product: Shein Swimsuit Cover Up

    Shein

    Swimsuit Cover Up
    Size 0X Plus
    Becca Swimsuit Bottoms (view 2)Becca Swimsuit Bottoms (view 1)
    View Product: Becca Swimsuit Bottoms

    Becca

    Swimsuit Bottoms
    Size 0X Plus
    Shein Swimsuit Bottoms (view 2)Shein Swimsuit Bottoms (view 1)
    View Product: Shein Swimsuit Bottoms

    Shein

    Swimsuit Bottoms
    Size 0X Plus
    Sporti One Piece Swimsuit (view 2)Sporti One Piece Swimsuit (view 1)
    View Product: Sporti One Piece Swimsuit

    Sporti

    One Piece Swimsuit
    Size 30 Plus
    Nike One Piece Swimsuit (view 2)Nike One Piece Swimsuit (view 1)
    View Product: Nike One Piece Swimsuit

    Nike

    One Piece Swimsuit
    Size 30 Plus
    Shein One Piece Swimsuit (view 2)Shein One Piece Swimsuit (view 1)
    View Product: Shein One Piece Swimsuit

    Shein

    One Piece Swimsuit
    Size 0X Plus
    Cupshe One Piece Swimsuit (view 2)Cupshe One Piece Swimsuit (view 1)New With Tags
    View Product: Cupshe One Piece Swimsuit

    Cupshe

    One Piece Swimsuit
    Size 0X Plus
    Shein Swimsuit Top (view 2)Shein Swimsuit Top (view 1)
    View Product: Shein Swimsuit Top

    Shein

    Swimsuit Top
    Size 0X Plus
    $8.99 $7.19 20% off with code THANKU
    43% off estimated retail
    Shein Swimsuit Bottoms (view 2)Shein Swimsuit Bottoms (view 1)
    View Product: Shein Swimsuit Bottoms

    Shein

    Swimsuit Bottoms
    Size 0X Plus
    Shein Swimsuit Bottoms (view 2)Shein Swimsuit Bottoms (view 1)
    View Product: Shein Swimsuit Bottoms

    Shein

    Swimsuit Bottoms
    Size 0X Plus
    Cupshe Swimsuit Bottoms (view 2)Cupshe Swimsuit Bottoms (view 1)New With Tags
    View Product: Cupshe Swimsuit Bottoms

    Cupshe

    Swimsuit Bottoms
    Size 0X Plus
    Shein One Piece Swimsuit (view 2)Shein One Piece Swimsuit (view 1)
    View Product: Shein One Piece Swimsuit

    Shein

    One Piece Swimsuit
    Size 0X Plus
    Shein Swimsuit Bottoms (view 2)Shein Swimsuit Bottoms (view 1)
    View Product: Shein Swimsuit Bottoms

    Shein

    Swimsuit Bottoms
    Size 0X Plus
    $7.99 $6.39 20% off with code THANKU
    50% off estimated retail

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