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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.

BlueRemove filterGreenRemove filter$25 - $50Remove filter
13 items
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    Aqua Green One Piece Swimsuit (view 2)Aqua Green One Piece Swimsuit (view 1)New With Tags
    View Product: Aqua Green One Piece Swimsuit

    Aqua Green

    One Piece Swimsuit
    Size 18 Plus
    $29.99
    40% off estimated retail
    Lauren by Ralph Lauren Swimsuit Top (view 2)Lauren by Ralph Lauren Swimsuit Top (view 1)
    View Product: Lauren by Ralph Lauren Swimsuit Top

    Lauren by Ralph Lauren

    Swimsuit Top
    Size 18 Plus
    $44.99
    52% off estimated retail
    Girl Howdy One Piece Swimsuit (view 2)Girl Howdy One Piece Swimsuit (view 1)
    View Product: Girl Howdy One Piece Swimsuit

    Girl Howdy

    One Piece Swimsuit
    Size 18 Plus
    $34.99
    53% off estimated retail
    Summersalt Swimsuit Top (view 2)Summersalt Swimsuit Top (view 1)
    View Product: Summersalt Swimsuit Top

    Summersalt

    Swimsuit Top
    Size 18 Plus
    $29.99
    53% off estimated retail
    The Edit. Forever Classic, Get perfectly polished in trousers, blazers, and more. Shop The Edit
    La Blanca One Piece Swimsuit (view 2)La Blanca One Piece Swimsuit (view 1)
    View Product: La Blanca One Piece Swimsuit

    La Blanca

    One Piece Swimsuit
    Size 18 Plus
    $42.99
    24% off estimated retail
    J.Crew One Piece Swimsuit (view 2)J.Crew One Piece Swimsuit (view 1)New With Tags
    View Product: J.Crew One Piece Swimsuit

    J.Crew

    One Piece Swimsuit
    Size 18 Plus
    $34.99
    72% off estimated retail
    Birdsong Swimsuit Bottoms (view 2)Birdsong Swimsuit Bottoms (view 1)
    View Product: Birdsong Swimsuit Bottoms

    Birdsong

    Swimsuit Bottoms
    Size 18 Plus
    $32.99 $21.44 35% off with code THANKU
    67% off estimated retail
    Birdsong Swimsuit Bottoms (view 2)Birdsong Swimsuit Bottoms (view 1)New With Tags
    View Product: Birdsong Swimsuit Bottoms

    Birdsong

    Swimsuit Bottoms
    Size 18 Plus
    $32.99 $21.44 35% off with code THANKU
    67% off estimated retail
    Lands' End One Piece Swimsuit (view 2)Lands' End One Piece Swimsuit (view 1)
    View Product: Lands' End One Piece Swimsuit

    Lands' End

    One Piece Swimsuit
    Size 18 Plus
    $29.99 $13.50 55% off with code THANKU
    68% off estimated retail
    Heat One Piece Swimsuit (view 2)Heat One Piece Swimsuit (view 1)
    View Product: Heat One Piece Swimsuit

    Heat

    One Piece Swimsuit
    Size 18 Plus
    $35.99 $23.39 35% off with code THANKU
    36% off estimated retail
    Seafolly Swimsuit Bottoms (view 2)Seafolly Swimsuit Bottoms (view 1)
    View Product: Seafolly Swimsuit Bottoms

    Seafolly

    Swimsuit Bottoms
    Size 18 Plus
    $32.99 $21.44 35% off with code THANKU
    71% off estimated retail
    Nasty Gal Inc. Swimsuit Top (view 2)Nasty Gal Inc. Swimsuit Top (view 1)
    View Product: Nasty Gal Inc. Swimsuit Top

    Nasty Gal Inc.

    Swimsuit Top
    Size 18 Plus
    $31.99 $20.79 35% off with code THANKU
    57% off estimated retail
    GabiFresh x Swimsuits For All Swimsuit Bottoms (view 2)GabiFresh x Swimsuits For All Swimsuit Bottoms (view 1)Price Drop
    View Product: GabiFresh x Swimsuits For All Swimsuit Bottoms

    GabiFresh x Swimsuits For All

    Swimsuit Bottoms
    Size 18 Plus
    $29.99 $15.00 50% off with code THANKU
    70% off estimated retail
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