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.

256 items
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    Lands' End Swimsuit Top (view 2)Lands' End Swimsuit Top (view 1)
    View Product: Lands' End Swimsuit Top

    Lands' End

    Swimsuit Top
    Size 18 Plus
    $26.99
    57% 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
    $34.99
    63% off estimated retail
    Swimsuits for all Swimsuit Cover Up (view 2)Swimsuits for all Swimsuit Cover Up (view 1)
    View Product: Swimsuits for all Swimsuit Cover Up

    Swimsuits for all

    Swimsuit Cover Up
    Size 18 Plus
    $22.99
    59% off estimated retail
    Swimsuits for all Swimsuit Cover Up (view 2)Swimsuits for all Swimsuit Cover Up (view 1)
    View Product: Swimsuits for all Swimsuit Cover Up

    Swimsuits for all

    Swimsuit Cover Up
    Size 18 Plus
    $22.99
    59% off estimated retail
    The Edit. Forever Classic, Get perfectly polished in trousers, blazers, and more. Shop The Edit
    Swimsuits for all One Piece Swimsuit (view 2)Swimsuits for all One Piece Swimsuit (view 1)New With Tags
    View Product: Swimsuits for all One Piece Swimsuit

    Swimsuits for all

    One Piece Swimsuit
    Size 18 Plus
    $22.99
    59% off estimated retail
    Kona Sol One Piece Swimsuit (view 2)Kona Sol One Piece Swimsuit (view 1)
    View Product: Kona Sol One Piece Swimsuit

    Kona Sol

    One Piece Swimsuit
    Size 18 Plus
    $23.99
    36% off estimated retail
    Lane Bryant Swimsuit Bottoms (view 2)Lane Bryant Swimsuit Bottoms (view 1)
    View Product: Lane Bryant Swimsuit Bottoms

    Lane Bryant

    Swimsuit Bottoms
    Size 18 Plus
    $17.99
    52% off estimated retail
    Hilor One Piece Swimsuit (view 2)Hilor One Piece Swimsuit (view 1)
    View Product: Hilor One Piece Swimsuit

    Hilor

    One Piece Swimsuit
    Size 18 Plus
    $16.99
    41% off estimated retail
    Greensource Brand Apparel Swimsuit Top (view 2)Greensource Brand Apparel Swimsuit Top (view 1)
    View Product: Greensource Brand Apparel Swimsuit Top
    Size 18 Plus
    $13.99
    44% off estimated retail
    Lauren by Ralph Lauren Swimsuit Top (view 2)Lauren by Ralph Lauren Swimsuit Top (view 1)New With Tags
    View Product: Lauren by Ralph Lauren Swimsuit Top
    Size 18 Plus
    $57.99
    68% off estimated retail
    Cocoship Swimsuit Top (view 2)Cocoship Swimsuit Top (view 1)
    View Product: Cocoship Swimsuit Top

    Cocoship

    Swimsuit Top
    Size 18 Plus
    $11.99
    47% off estimated retail
    Cocoship Swimsuit Bottoms (view 2)Cocoship Swimsuit Bottoms (view 1)
    View Product: Cocoship Swimsuit Bottoms

    Cocoship

    Swimsuit Bottoms
    Size 18 Plus
    $16.99
    26% 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 18 Plus
    $17.99
    52% off estimated retail
    Lane Bryant Swimsuit Cover Up (view 2)Lane Bryant Swimsuit Cover Up (view 1)
    View Product: Lane Bryant Swimsuit Cover Up

    Lane Bryant

    Swimsuit Cover Up
    Size 18 Plus
    $22.99
    59% off estimated retail
    Lane Bryant Swimsuit Bottoms (view 2)Lane Bryant Swimsuit Bottoms (view 1)
    View Product: Lane Bryant Swimsuit Bottoms

    Lane Bryant

    Swimsuit Bottoms
    Size 18 Plus
    $16.99
    55% off estimated retail
    Lane Bryant Swimsuit Bottoms (view 2)Lane Bryant Swimsuit Bottoms (view 1)
    View Product: Lane Bryant Swimsuit Bottoms

    Lane Bryant

    Swimsuit Bottoms
    Size 18 Plus
    $18.99
    50% off estimated retail
    Liz Claiborne Swimsuit Top (view 2)Liz Claiborne Swimsuit Top (view 1)
    View Product: Liz Claiborne Swimsuit Top

    Liz Claiborne

    Swimsuit Top
    Size 18 Plus
    $26.99
    60% 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 18 Plus
    $21.99
    56% off estimated retail
    Speedo One Piece Swimsuit (view 2)Speedo One Piece Swimsuit (view 1)
    View Product: Speedo One Piece Swimsuit

    Speedo

    One Piece Swimsuit
    Size 18 Plus
    $43.99
    39% off estimated retail
    Trimshaper Swimsuit Top (view 2)Trimshaper Swimsuit Top (view 1)
    View Product: Trimshaper Swimsuit Top

    Trimshaper

    Swimsuit Top
    Size 18 Plus
    $20.99
    55% off estimated retail
    Sonnet Shores Swimsuit Bottoms (view 2)Sonnet Shores Swimsuit Bottoms (view 1)
    View Product: Sonnet Shores Swimsuit Bottoms

    Sonnet Shores

    Swimsuit Bottoms
    Size 18 Plus
    $29.99
    54% off estimated retail
    Septangle Swimsuit Bottoms (view 2)Septangle Swimsuit Bottoms (view 1)
    View Product: Septangle Swimsuit Bottoms

    Septangle

    Swimsuit Bottoms
    Size 18 Plus
    $11.99
    31% 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 18 Plus
    $16.99
    44% off estimated retail
    Lands' End Rash Guard (view 2)Lands' End Rash Guard (view 1)
    View Product: Lands' End Rash Guard

    Lands' End

    Rash Guard
    Size 18 Plus
    $34.99
    63% off estimated retail
    Swimsuits for all Swimsuit Top (view 2)Swimsuits for all Swimsuit Top (view 1)
    View Product: Swimsuits for all Swimsuit Top

    Swimsuits for all

    Swimsuit Top
    Size 18 Plus
    $18.99
    50% off estimated retail
    Kim Rogers Swimsuit Top (view 2)Kim Rogers Swimsuit Top (view 1)
    View Product: Kim Rogers Swimsuit Top

    Kim Rogers

    Swimsuit Top
    Size 18 Plus
    $8.99
    38% 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 18 Plus
    $24.99
    60% 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 18 Plus
    $25.99
    59% 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 18 Plus
    $27.99
    56% off estimated retail
    Cherokee One Piece Swimsuit (view 2)Cherokee One Piece Swimsuit (view 1)
    View Product: Cherokee One Piece Swimsuit

    Cherokee

    One Piece Swimsuit
    Size 18 Plus
    $13.99
    26% off estimated retail
    Maxine of Hollywood One Piece Swimsuit (view 2)Maxine of Hollywood One Piece Swimsuit (view 1)
    View Product: Maxine of Hollywood One Piece Swimsuit

    Maxine of Hollywood

    One Piece Swimsuit
    Size 18 Plus
    $34.99
    53% 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 18 Plus
    $23.99
    62% 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 18 Plus
    $23.99
    47% off estimated retail
    Venus One Piece Swimsuit (view 2)Venus One Piece Swimsuit (view 1)
    View Product: Venus One Piece Swimsuit

    Venus

    One Piece Swimsuit
    Size 18 Plus
    $11.99
    36% off estimated retail
    Sonnet Shores Swimsuit Top (view 2)Sonnet Shores Swimsuit Top (view 1)
    View Product: Sonnet Shores Swimsuit Top

    Sonnet Shores

    Swimsuit Top
    Size 18 Plus
    $33.99
    46% off estimated retail
    Venus One Piece Swimsuit (view 2)Venus One Piece Swimsuit (view 1)
    View Product: Venus One Piece Swimsuit

    Venus

    One Piece Swimsuit
    Size 18 Plus
    $12.99
    55% off estimated retail
    Annabelle One Piece Swimsuit (view 2)Annabelle One Piece Swimsuit (view 1)
    View Product: Annabelle One Piece Swimsuit

    Annabelle

    One Piece Swimsuit
    Size 18 Plus
    $12.99
    31% off estimated retail
    ELOQUII One Piece Swimsuit (view 2)ELOQUII One Piece Swimsuit (view 1)
    View Product: ELOQUII One Piece Swimsuit

    ELOQUII

    One Piece Swimsuit
    Size 18 Plus
    $18.99
    62% 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 18 Plus
    $24.99
    51% off estimated retail
    Rose Gal Swimsuit Cover Up (view 2)Rose Gal Swimsuit Cover Up (view 1)
    View Product: Rose Gal Swimsuit Cover Up

    Rose Gal

    Swimsuit Cover Up
    Size 18 Plus
    $23.99
    36% off estimated retail
    Merona One Piece Swimsuit (view 2)Merona One Piece Swimsuit (view 1)
    View Product: Merona One Piece Swimsuit

    Merona

    One Piece Swimsuit
    Size 18 Plus
    $19.99
    48% 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 28 Plus
    $13.99
    50% off estimated retail
    Mynah's Reynu Taandon Swimsuit Top (view 2)Mynah's Reynu Taandon Swimsuit Top (view 1)New With Tags
    View Product: Mynah's Reynu Taandon Swimsuit Top
    Size 18 Plus
    $37.99
    30% off estimated retail
    Blair Swimsuit Top (view 2)Blair Swimsuit Top (view 1)
    View Product: Blair Swimsuit Top

    Blair

    Swimsuit Top
    Size 18 Plus
    $12.99
    31% off estimated retail
    Summersalt Swimsuit Bottoms (view 2)Summersalt Swimsuit Bottoms (view 1)New With Tags
    View Product: Summersalt Swimsuit Bottoms

    Summersalt

    Swimsuit Bottoms
    Size 18 Plus
    $36.99
    53% off estimated retail
    In'Voland Swimsuit Top (view 2)In'Voland Swimsuit Top (view 1)
    View Product: In'Voland Swimsuit Top

    In'Voland

    Swimsuit Top
    Size 18 Plus
    $19.99
    37% off estimated retail
    St. John's Bay One Piece Swimsuit (view 2)St. John's Bay One Piece Swimsuit (view 1)
    View Product: St. John's Bay One Piece Swimsuit

    St. John's Bay

    One Piece Swimsuit
    Size 18 Plus
    $15.99
    60% 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 18 Plus
    $20.99
    55% 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 18 Plus
    $24.99
    60% 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 18 Plus
    $24.99
    60% 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 18 Plus
    $27.99
    56% off estimated retail
    Venus One Piece Swimsuit (view 2)Venus One Piece Swimsuit (view 1)
    View Product: Venus One Piece Swimsuit

    Venus

    One Piece Swimsuit
    Size 18 Plus
    $17.99
    37% 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 18 Plus
    $21.99
    65% off estimated retail
    Lela Rose for Cacique Swimsuit Bottoms (view 2)Lela Rose for Cacique Swimsuit Bottoms (view 1)
    View Product: Lela Rose for Cacique Swimsuit Bottoms

    Lela Rose for Cacique

    Swimsuit Bottoms
    Size 18 Plus
    $18.99
    52% 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 18 Plus
    $22.99
    64% off estimated retail
    In'Voland Swimsuit Bottoms (view 2)In'Voland Swimsuit Bottoms (view 1)New With Tags
    View Product: In'Voland Swimsuit Bottoms

    In'Voland

    Swimsuit Bottoms
    Size 18 Plus
    $19.99
    37% off estimated retail
    Longitude One Piece Swimsuit (view 2)Longitude One Piece Swimsuit (view 1)
    View Product: Longitude One Piece Swimsuit

    Longitude

    One Piece Swimsuit
    Size 28 Plus
    $31.99
    59% off estimated retail
    Catherines Swimsuit Top (view 2)Catherines Swimsuit Top (view 1)New With Tags
    View Product: Catherines Swimsuit Top

    Catherines

    Swimsuit Top
    Size 28 Plus
    $15.99
    50% 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 18 Plus
    $23.99
    47% off estimated retail
    Swimsuits for all Swimsuit Cover Up (view 2)Swimsuits for all Swimsuit Cover Up (view 1)
    View Product: Swimsuits for all Swimsuit Cover Up

    Swimsuits for all

    Swimsuit Cover Up
    Size 18 Plus
    $23.99
    64% off estimated retail
    Aqua One Piece Swimsuit (view 2)Aqua One Piece Swimsuit (view 1)New With Tags
    View Product: Aqua One Piece Swimsuit

    Aqua

    One Piece Swimsuit
    Size 18 Plus
    $32.99
    57% off estimated retail
    Beach House Swimsuit Bottoms (view 2)Beach House Swimsuit Bottoms (view 1)
    View Product: Beach House Swimsuit Bottoms

    Beach House

    Swimsuit Bottoms
    Size 18 Plus
    $28.99
    52% off estimated retail
    Beach House Swimsuit Top (view 2)Beach House Swimsuit Top (view 1)
    View Product: Beach House Swimsuit Top

    Beach House

    Swimsuit Top
    Size 18 Plus
    $35.99
    43% off estimated retail
    Rose Marie Reid One Piece Swimsuit (view 2)Rose Marie Reid One Piece Swimsuit (view 1)
    View Product: Rose Marie Reid One Piece Swimsuit

    Rose Marie Reid

    One Piece Swimsuit
    Size 18 Plus
    $32.99
    57% 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 18 Plus
    $19.99
    68% 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 18 Plus
    $24.99
    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 18 Plus
    $19.99
    68% off estimated retail
    L.L.Bean One Piece Swimsuit (view 2)L.L.Bean One Piece Swimsuit (view 1)
    View Product: L.L.Bean One Piece Swimsuit

    L.L.Bean

    One Piece Swimsuit
    Size 18 Plus
    $21.99
    54% off estimated retail
    Swimsuits for all Swimsuit Top (view 2)Swimsuits for all Swimsuit Top (view 1)
    View Product: Swimsuits for all Swimsuit Top

    Swimsuits for all

    Swimsuit Top
    Size 18 Plus
    $22.99
    50% off estimated retail
    Caribbean Sand One Piece Swimsuit (view 2)Caribbean Sand One Piece Swimsuit (view 1)New With Tags
    View Product: Caribbean Sand One Piece Swimsuit

    Caribbean Sand

    One Piece Swimsuit
    Size 18 Plus
    $39.99
    61% off estimated retail
    Kona Sol One Piece Swimsuit (view 2)Kona Sol One Piece Swimsuit (view 1)
    View Product: Kona Sol One Piece Swimsuit

    Kona Sol

    One Piece Swimsuit
    Size 18 Plus
    $28.99
    36% off estimated retail
    ASOS Swimsuit Bottoms (view 2)ASOS Swimsuit Bottoms (view 1)
    View Product: ASOS Swimsuit Bottoms

    ASOS

    Swimsuit Bottoms
    Size 18 Plus
    $26.99
    31% off estimated retail
    Unbranded Swimsuit Top (view 2)Unbranded Swimsuit Top (view 1)
    View Product: Unbranded Swimsuit Top

    Unbranded

    Swimsuit Top
    Size 18 Plus
    $11.99
    60% off estimated retail
    ASOS Swimsuit Bottoms (view 2)ASOS Swimsuit Bottoms (view 1)
    View Product: ASOS Swimsuit Bottoms

    ASOS

    Swimsuit Bottoms
    Size 18 Plus
    $20.99
    46% off estimated retail
    Kona Sol One Piece Swimsuit (view 2)Kona Sol One Piece Swimsuit (view 1)
    View Product: Kona Sol One Piece Swimsuit

    Kona Sol

    One Piece Swimsuit
    Size 18 Plus
    $27.99
    39% off estimated retail
    Jolyn One Piece Swimsuit (view 2)Jolyn One Piece Swimsuit (view 1)
    View Product: Jolyn One Piece Swimsuit

    Jolyn

    One Piece Swimsuit
    Size 28 Plus
    Reebok One Piece Swimsuit (view 2)Reebok One Piece Swimsuit (view 1)New With Tags
    View Product: Reebok One Piece Swimsuit

    Reebok

    One Piece Swimsuit
    Size 18 Plus
    XXI Swimsuit Bottoms (view 2)XXI Swimsuit Bottoms (view 1)New With Tags
    View Product: XXI Swimsuit Bottoms

    XXI

    Swimsuit Bottoms
    Size 18 Plus

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