Whether you're going on vacation, heading to the beach for a day, or getting in some laps at the pool, you need a good swimsuit. Shop thredUP's selection of plus-size swimwear to find amazing items at up to 90% off estimated retail.

390 items
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    Athleta Swimsuit Bottoms (view 2)Athleta Swimsuit Bottoms (view 1)
    View Product: Athleta Swimsuit Bottoms

    Athleta

    Swimsuit Bottoms
    Size XXL
    $25.99
    55% 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 14
    $18.99
    50% 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 20 Plus
    $19.99
    68% off estimated retail
    Gabar One Piece Swimsuit (view 2)Gabar One Piece Swimsuit (view 1)
    View Product: Gabar One Piece Swimsuit

    Gabar

    One Piece Swimsuit
    Size 16
    $27.99
    50% off estimated retail
    The Edit. Forever Classic, Get perfectly polished in trousers, blazers, and more. Shop The Edit
    Lands' End Swimsuit Top (view 2)Lands' End Swimsuit Top (view 1)New With Tags
    View Product: Lands' End Swimsuit Top

    Lands' End

    Swimsuit Top
    Size 18 Plus
    $21.99
    65% off estimated retail
    Torrid Swimsuit Top (view 2)Torrid Swimsuit Top (view 1)
    View Product: Torrid Swimsuit Top

    Torrid

    Swimsuit Top
    Size 2X Plus
    $19.99
    60% off estimated retail
    Torrid Swimsuit Top (view 2)Torrid Swimsuit Top (view 1)
    View Product: Torrid Swimsuit Top

    Torrid

    Swimsuit Top
    Size 1X Plus
    $19.99
    60% off estimated retail
    Time and Tru Swimsuit Top (view 2)Time and Tru Swimsuit Top (view 1)
    View Product: Time and Tru Swimsuit Top

    Time and Tru

    Swimsuit Top
    Size 3X Plus
    $6.99
    46% off estimated retail
    Profile Swimsuit Top (view 2)Profile Swimsuit Top (view 1)
    View Product: Profile Swimsuit Top

    Profile

    Swimsuit Top
    Size XL
    $9.99
    47% off estimated retail
    Gap One Piece Swimsuit (view 2)Gap One Piece Swimsuit (view 1)
    View Product: Gap One Piece Swimsuit

    Gap

    One Piece Swimsuit
    Size XL
    $30.99
    61% 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 24 Plus
    $18.99
    50% off estimated retail
    Athleta Swimsuit Top (view 2)Athleta Swimsuit Top (view 1)
    View Product: Athleta Swimsuit Top

    Athleta

    Swimsuit Top
    Size XL
    $24.99
    57% 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 16
    $15.99
    46% 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 20 Plus
    $21.99
    42% 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
    $25.99
    72% off estimated retail
    Calvin Klein One Piece Swimsuit (view 2)Calvin Klein One Piece Swimsuit (view 1)
    View Product: Calvin Klein One Piece Swimsuit

    Calvin Klein

    One Piece Swimsuit
    Size 14
    $37.99
    72% off estimated retail
    Swim Systems Swimsuit Top (view 2)Swim Systems Swimsuit Top (view 1)
    View Product: Swim Systems Swimsuit Top

    Swim Systems

    Swimsuit Top
    Size XL
    $16.99
    66% off estimated retail
    Athleta Swimsuit Top (view 2)Athleta Swimsuit Top (view 1)Flawed Gem
    View Product: Athleta Swimsuit Top

    Athleta

    Swimsuit Top
    Size XL
    $22.99
    61% 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 22 Plus
    $26.99
    57% off estimated retail
    Athleta Swimsuit Top (view 2)Athleta Swimsuit Top (view 1)
    View Product: Athleta Swimsuit Top

    Athleta

    Swimsuit Top
    Size XL
    $25.99
    55% off estimated retail
    Old Navy Swimsuit Top (view 2)Old Navy Swimsuit Top (view 1)
    View Product: Old Navy Swimsuit Top

    Old Navy

    Swimsuit Top
    Size XL
    $11.99
    52% off estimated retail
    Swims Swimsuit Top (view 2)Swims Swimsuit Top (view 1)
    View Product: Swims Swimsuit Top

    Swims

    Swimsuit Top
    Size 1X Plus
    $30.99
    65% off estimated retail
    Unbranded Swimsuit Bottoms (view 2)Unbranded Swimsuit Bottoms (view 1)
    View Product: Unbranded Swimsuit Bottoms

    Unbranded

    Swimsuit Bottoms
    Size 3X Plus
    $16.99
    32% 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 3X Plus
    $17.99
    52% 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 14
    $14.99
    79% off estimated retail
    LA Hearts Swimsuit Bottoms (view 2)LA Hearts Swimsuit Bottoms (view 1)
    View Product: LA Hearts Swimsuit Bottoms

    LA Hearts

    Swimsuit Bottoms
    Size XL
    $9.99
    60% 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 22 Plus
    $8.99
    43% off estimated retail
    Cupshe Swimsuit Top (view 2)Cupshe Swimsuit Top (view 1)
    View Product: Cupshe Swimsuit Top

    Cupshe

    Swimsuit Top
    Size 3X Plus
    $13.99
    26% 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 14
    $32.99
    74% off estimated retail
    Swim by Cacique Swimsuit Top (view 2)Swim by Cacique Swimsuit Top (view 1)
    View Product: Swim by Cacique Swimsuit Top

    Swim by Cacique

    Swimsuit Top
    Size 16
    $21.99
    56% off estimated retail
    Catalina Swimsuit Top (view 2)Catalina Swimsuit Top (view 1)
    View Product: Catalina Swimsuit Top

    Catalina

    Swimsuit Top
    Size 1X Plus
    $7.99
    38% off estimated retail
    Mazu Swim Swimsuit Bottoms (view 2)Mazu Swim Swimsuit Bottoms (view 1)
    View Product: Mazu Swim Swimsuit Bottoms

    Mazu Swim

    Swimsuit Bottoms
    Size 14
    $20.99
    58% 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 14
    $21.99
    65% 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
    $33.99
    64% off estimated retail
    Torrid Swimsuit Top (view 2)Torrid Swimsuit Top (view 1)
    View Product: Torrid Swimsuit Top

    Torrid

    Swimsuit Top
    Size Lg Plus
    $22.99
    54% off estimated retail
    Billabong Swimsuit Bottoms (view 2)Billabong Swimsuit Bottoms (view 1)Flawed Gem
    View Product: Billabong Swimsuit Bottoms

    Billabong

    Swimsuit Bottoms
    Size XL
    $13.99
    44% 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 18 Plus
    $14.99
    60% off estimated retail
    Avenue Swimsuit Top (view 2)Avenue Swimsuit Top (view 1)
    View Product: Avenue Swimsuit Top

    Avenue

    Swimsuit Top
    Size 16 Plus
    $20.99
    34% off estimated retail
    Unbranded Swimsuit Top (view 2)Unbranded Swimsuit Top (view 1)
    View Product: Unbranded Swimsuit Top

    Unbranded

    Swimsuit Top
    Size XL
    $9.99
    60% 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
    $15.99
    36% off estimated retail
    Freshwater Swimsuit Bottoms (view 2)Freshwater Swimsuit Bottoms (view 1)
    View Product: Freshwater Swimsuit Bottoms

    Freshwater

    Swimsuit Bottoms
    Size 3X Plus
    $37.99
    50% off estimated retail
    Assets One Piece Swimsuit (view 2)Assets One Piece Swimsuit (view 1)
    View Product: Assets One Piece Swimsuit

    Assets

    One Piece Swimsuit
    Size XL
    $13.99
    51% off estimated retail
    TYR One Piece Swimsuit (view 2)TYR One Piece Swimsuit (view 1)
    View Product: TYR One Piece Swimsuit

    TYR

    One Piece Swimsuit
    Size 18 Plus
    $27.99
    50% off estimated retail
    Unbranded Swimsuit Top (view 2)Unbranded Swimsuit Top (view 1)
    View Product: Unbranded Swimsuit Top

    Unbranded

    Swimsuit Top
    Size XXL
    $12.99
    48% 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 14
    $50.99
    20% off estimated retail
    Catherines Swimsuit Cover Up (view 2)Catherines Swimsuit Cover Up (view 1)New With Tags
    View Product: Catherines Swimsuit Cover Up

    Catherines

    Swimsuit Cover Up
    Size 0X Plus
    $20.99
    57% 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 22 Plus
    $14.99
    60% off estimated retail
    Arena One Piece Swimsuit (view 2)Arena One Piece Swimsuit (view 1)
    View Product: Arena One Piece Swimsuit

    Arena

    One Piece Swimsuit
    Size 28 Plus

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