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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.

35 items
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    Aqua Green One Piece Swimsuit (view 2)Aqua Green One Piece Swimsuit (view 1)
    View Product: Aqua Green One Piece Swimsuit

    Aqua Green

    One Piece Swimsuit
    Size 26 Plus
    $23.99
    36% 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 26 Plus
    $16.99
    55% off estimated retail
    Avenue Swimsuit Top (view 2)Avenue Swimsuit Top (view 1)
    View Product: Avenue Swimsuit Top

    Avenue

    Swimsuit Top
    Size 26 Plus
    $14.99
    53% off estimated retail
    iswim One Piece Swimsuit (view 2)iswim One Piece Swimsuit (view 1)New With Tags
    View Product: iswim One Piece Swimsuit

    iswim

    One Piece Swimsuit
    Size 26 Plus
    $21.99
    54% off estimated retail
    The Edit. Forever Classic, Get perfectly polished in trousers, blazers, and more. Shop The Edit
    Beach Native One Piece Swimsuit (view 2)Beach Native One Piece Swimsuit (view 1)
    View Product: Beach Native One Piece Swimsuit

    Beach Native

    One Piece Swimsuit
    Size 26 Plus
    $38.99
    58% off estimated retail
    Assorted Brands Swimsuit Top (view 2)Assorted Brands Swimsuit Top (view 1)
    View Product: Assorted Brands Swimsuit Top

    Assorted Brands

    Swimsuit Top
    Size 26 Plus
    $12.99 $10.39 20% off with code THANKU
    48% off estimated retail
    Swimsuits for all Swimsuit Bottoms (view 2)Swimsuits for all Swimsuit Bottoms (view 1)
    View Product: Swimsuits for all Swimsuit Bottoms

    Swimsuits for all

    Swimsuit Bottoms
    Size 26 Plus
    $12.99 $9.09 30% off with code THANKU
    65% off estimated retail
    Avenue Swimsuit Cover Up (view 2)Avenue Swimsuit Cover Up (view 1)
    View Product: Avenue Swimsuit Cover Up

    Avenue

    Swimsuit Cover Up
    Size 26 Plus
    $14.99 $10.49 30% off with code THANKU
    68% off estimated retail
    Inches Off Swimwear by Figure Magic Swimsuit Top (view 2)Inches Off Swimwear by Figure Magic Swimsuit Top (view 1)
    View Product: Inches Off Swimwear by Figure Magic Swimsuit Top

    Inches Off Swimwear by Figure Magic

    Swimsuit Top
    Size 26 Plus
    $22.99 $16.09 30% off with code THANKU
    39% off estimated retail
    Lands' End Swimsuit Top (view 2)Lands' End Swimsuit Top (view 1)
    View Product: Lands' End Swimsuit Top

    Lands' End

    Swimsuit Top
    Size 26 Plus
    $20.99 $12.59 40% off with code THANKU
    67% off estimated retail
    Lands' End Swimsuit Top (view 2)Lands' End Swimsuit Top (view 1)
    View Product: Lands' End Swimsuit Top

    Lands' End

    Swimsuit Top
    Size 26 Plus
    $25.99 $15.59 40% off with code THANKU
    59% off estimated retail
    Swim by Cacique Swimsuit Bottoms (view 2)Swim by Cacique Swimsuit Bottoms (view 1)
    View Product: Swim by Cacique Swimsuit Bottoms

    Swim by Cacique

    Swimsuit Bottoms
    Size 26 Plus
    $19.99 $11.99 40% off with code THANKU
    60% off estimated retail
    Swimsuits for all Swimsuit Top (view 2)Swimsuits for all Swimsuit Top (view 1)New With Tags
    View Product: Swimsuits for all Swimsuit Top

    Swimsuits for all

    Swimsuit Top
    Size 26 Plus
    $18.99 $11.39 40% off with code THANKU
    50% off estimated retail
    Assorted Brands Swimsuit Top (view 2)Assorted Brands Swimsuit Top (view 1)New With Tags
    View Product: Assorted Brands Swimsuit Top

    Assorted Brands

    Swimsuit Top
    Size 26 Plus
    $10.99 $8.79 20% off with code THANKU
    56% off estimated retail
    Merona Swimsuit Top (view 2)Merona Swimsuit Top (view 1)
    View Product: Merona Swimsuit Top

    Merona

    Swimsuit Top
    Size 26 Plus
    $9.99 $7.99 20% off with code THANKU
    47% off estimated retail
    Swim by Cacique Swimsuit Top (view 2)Swim by Cacique Swimsuit Top (view 1)New With Tags
    View Product: Swim by Cacique Swimsuit Top

    Swim by Cacique

    Swimsuit Top
    Size 26 Plus
    $23.99 $14.39 40% off with code THANKU
    52% 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 26 Plus
    $28.99 $15.94 45% off with code THANKU
    69% off estimated retail
    Swim by Cacique Swimsuit Bottoms (view 2)Swim by Cacique Swimsuit Bottoms (view 1)
    View Product: Swim by Cacique Swimsuit Bottoms

    Swim by Cacique

    Swimsuit Bottoms
    Size 26 Plus
    $19.99 $11.99 40% off with code THANKU
    60% off estimated retail
    Lands' End Swimsuit Top (view 2)Lands' End Swimsuit Top (view 1)
    View Product: Lands' End Swimsuit Top

    Lands' End

    Swimsuit Top
    Size 26 Plus
    $22.99 $13.79 40% off with code THANKU
    64% off estimated retail
    Sporti One Piece Swimsuit (view 2)Sporti One Piece Swimsuit (view 1)
    View Product: Sporti One Piece Swimsuit

    Sporti

    One Piece Swimsuit
    Size 26 Plus
    $16.99 $12.74 25% off with code THANKU
    29% off estimated retail
    Ava & Viv Swimsuit Top (view 2)Ava & Viv Swimsuit Top (view 1)
    View Product: Ava & Viv Swimsuit Top

    Ava & Viv

    Swimsuit Top
    Size 26 Plus
    $16.99 $11.04 35% off with code THANKU
    43% off estimated retail
    Lands' End Swimsuit Bottoms (view 2)Lands' End Swimsuit Bottoms (view 1)
    View Product: Lands' End Swimsuit Bottoms

    Lands' End

    Swimsuit Bottoms
    Size 26 Plus
    $27.99 $15.39 45% off with code THANKU
    56% off estimated retail
    Swim by Cacique Swimsuit Top (view 2)Swim by Cacique Swimsuit Top (view 1)New With Tags
    View Product: Swim by Cacique Swimsuit Top

    Swim by Cacique

    Swimsuit Top
    Size 26 Plus
    $23.99 $13.19 45% off with code THANKU
    63% off estimated retail
    Croft & Barrow Swimsuit Top (view 2)Croft & Barrow Swimsuit Top (view 1)
    View Product: Croft & Barrow Swimsuit Top

    Croft & Barrow

    Swimsuit Top
    Size 26 Plus
    $15.99 $11.99 25% off with code THANKU
    15% off estimated retail
    Unbranded Swimsuit Bottoms (view 2)Unbranded Swimsuit Bottoms (view 1)
    View Product: Unbranded Swimsuit Bottoms

    Unbranded

    Swimsuit Bottoms
    Size 26 Plus
    $9.99 $7.99 20% off with code THANKU
    60% off estimated retail
    Assorted Brands One Piece Swimsuit (view 2)Assorted Brands One Piece Swimsuit (view 1)New With Tags
    View Product: Assorted Brands One Piece Swimsuit

    Assorted Brands

    One Piece Swimsuit
    Size 26 Plus
    $16.99 $11.04 35% off with code THANKU
    55% off estimated retail
    Sporti One Piece Swimsuit (view 2)Sporti One Piece Swimsuit (view 1)New With Tags
    View Product: Sporti One Piece Swimsuit

    Sporti

    One Piece Swimsuit
    Size 26 Plus
    $13.99 $9.09 35% off with code THANKU
    41% off estimated retail
    Swim by Cacique Swimsuit Bottoms (view 2)Swim by Cacique Swimsuit Bottoms (view 1)
    View Product: Swim by Cacique Swimsuit Bottoms

    Swim by Cacique

    Swimsuit Bottoms
    Size 26 Plus
    $24.99 $11.25 55% off with code THANKU
    51% off estimated retail
    Swim by Cacique Swimsuit Cover Up (view 2)Swim by Cacique Swimsuit Cover Up (view 1)
    View Product: Swim by Cacique Swimsuit Cover Up

    Swim by Cacique

    Swimsuit Cover Up
    Size 26 Plus
    $19.99 $9.00 55% off with code THANKU
    73% off estimated retail
    Drew One Piece Swimsuit (view 2)Drew One Piece Swimsuit (view 1)
    View Product: Drew One Piece Swimsuit

    Drew

    One Piece Swimsuit
    Size 26 Plus
    $41.99 $27.29 35% off with code THANKU
    72% off estimated retail
    Unbranded Swimsuit Bottoms (view 2)Unbranded Swimsuit Bottoms (view 1)
    View Product: Unbranded Swimsuit Bottoms

    Unbranded

    Swimsuit Bottoms
    Size 26 Plus
    $11.99 $8.39 30% off with code THANKU
    52% off estimated retail
    Swim by Cacique Swimsuit Bottoms (view 2)Swim by Cacique Swimsuit Bottoms (view 1)Price Drop
    View Product: Swim by Cacique Swimsuit Bottoms

    Swim by Cacique

    Swimsuit Bottoms
    Size 26 Plus
    $22.99 $9.20 60% off with code THANKU
    54% 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 26 Plus
    $12.99 $8.44 35% off with code THANKU
    65% off estimated retail
    Swim by Cacique Swimsuit Bottoms (view 2)Swim by Cacique Swimsuit Bottoms (view 1)Price Drop
    View Product: Swim by Cacique Swimsuit Bottoms

    Swim by Cacique

    Swimsuit Bottoms
    Size 26 Plus
    $11.99 $6.59 45% off with code THANKU
    76% off estimated retail
    Assorted Brands Swimsuit Top (view 2)Assorted Brands Swimsuit Top (view 1)New With Tags
    View Product: Assorted Brands Swimsuit Top

    Assorted Brands

    Swimsuit Top
    Size 26 Plus
    $11.99 $7.79 35% off with code THANKU
    63% off estimated retail
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