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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.

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28 items
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    Wild Fable Swimsuit Top (view 2)Wild Fable Swimsuit Top (view 1)
    View Product: Wild Fable Swimsuit Top

    Wild Fable

    Swimsuit Top
    Size 12
    $10.99
    31% off estimated retail
    Christina One Piece Swimsuit (view 2)Christina One Piece Swimsuit (view 1)
    View Product: Christina One Piece Swimsuit

    Christina

    One Piece Swimsuit
    Size 12
    $15.99 $11.99 25% off with code THANKU
    66% off estimated retail
    Bleu Rod Beattie Swimsuit Bottoms (view 2)Bleu Rod Beattie Swimsuit Bottoms (view 1)
    View Product: Bleu Rod Beattie Swimsuit Bottoms

    Bleu Rod Beattie

    Swimsuit Bottoms
    Size 12
    $21.99 $13.19 40% off with code THANKU
    71% off estimated retail
    Shein Swimsuit Top (view 2)Shein Swimsuit Top (view 1)
    View Product: Shein Swimsuit Top

    Shein

    Swimsuit Top
    Size 12
    $12.99 $9.74 25% off with code THANKU
    18% off estimated retail
    The Edit. Forever Classic, Get perfectly polished in trousers, blazers, and more. Shop The Edit
    Shein Swimsuit Bottoms (view 2)Shein Swimsuit Bottoms (view 1)
    View Product: Shein Swimsuit Bottoms

    Shein

    Swimsuit Bottoms
    Size 12
    $9.99 $7.99 20% off with code THANKU
    37% 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 12
    $12.99 $9.74 25% off with code THANKU
    31% off estimated retail
    Wolf & Whistle Swimsuit Top (view 2)Wolf & Whistle Swimsuit Top (view 1)New With Tags
    View Product: Wolf & Whistle Swimsuit Top

    Wolf & Whistle

    Swimsuit Top
    Size 12
    $15.99 $11.99 25% off with code THANKU
    57% off estimated retail
    ASOS Swimsuit Bottoms (view 2)ASOS Swimsuit Bottoms (view 1)
    View Product: ASOS Swimsuit Bottoms

    ASOS

    Swimsuit Bottoms
    Size 12
    $11.99 $8.99 25% off with code THANKU
    62% off estimated retail
    ASOS Swimsuit Bottoms (view 2)ASOS Swimsuit Bottoms (view 1)
    View Product: ASOS Swimsuit Bottoms

    ASOS

    Swimsuit Bottoms
    Size 12
    $15.99 $11.19 30% off with code THANKU
    50% off estimated retail
    Nasty Gal Inc. Swimsuit Bottoms (view 2)Nasty Gal Inc. Swimsuit Bottoms (view 1)
    View Product: Nasty Gal Inc. Swimsuit Bottoms

    Nasty Gal Inc.

    Swimsuit Bottoms
    Size 12
    $14.99 $11.24 25% off with code THANKU
    80% off estimated retail
    Beach Bay Swimsuit Cover Up (view 2)Beach Bay Swimsuit Cover Up (view 1)Price Drop
    View Product: Beach Bay Swimsuit Cover Up

    Beach Bay

    Swimsuit Cover Up
    Size 12
    $17.99 $12.59 30% off with code THANKU
    52% off estimated retail
    Gerry Swimsuit Bottoms (view 2)Gerry Swimsuit Bottoms (view 1)Price Drop
    View Product: Gerry Swimsuit Bottoms

    Gerry

    Swimsuit Bottoms
    Size 12
    $17.99 $12.59 30% off with code THANKU
    64% off estimated retail
    Assorted Brands One Piece Swimsuit (view 2)Assorted Brands One Piece Swimsuit (view 1)Price Drop
    View Product: Assorted Brands One Piece Swimsuit

    Assorted Brands

    One Piece Swimsuit
    Size 12
    $17.99 $11.69 35% off with code THANKU
    52% off estimated retail
    Speedo Swimsuit Bottoms (view 2)Speedo Swimsuit Bottoms (view 1)Price Drop
    View Product: Speedo Swimsuit Bottoms

    Speedo

    Swimsuit Bottoms
    Size 12
    $13.99 $7.69 45% off with code THANKU
    44% off estimated retail
    Unbranded Swimsuit Top (view 2)Unbranded Swimsuit Top (view 1)Price Drop
    View Product: Unbranded Swimsuit Top

    Unbranded

    Swimsuit Top
    Size 12
    $11.99 $8.39 30% off with code THANKU
    52% off estimated retail
    Swimsuits for all One Piece Swimsuit (view 2)Swimsuits for all One Piece Swimsuit (view 1)Price Drop
    View Product: Swimsuits for all One Piece Swimsuit

    Swimsuits for all

    One Piece Swimsuit
    Size 12
    $22.99 $11.50 50% off with code THANKU
    59% off estimated retail
    Old Navy Swimsuit Top (view 2)Old Navy Swimsuit Top (view 1)Price Drop
    View Product: Old Navy Swimsuit Top

    Old Navy

    Swimsuit Top
    Size 12
    $10.99 $8.79 20% off with code THANKU
    56% off estimated retail
    Shein Swimsuit Top (view 2)Shein Swimsuit Top (view 1)Price Drop
    View Product: Shein Swimsuit Top

    Shein

    Swimsuit Top
    Size 12
    $9.99 $7.99 20% off with code THANKU
    37% off estimated retail
    ZeroXposur Swimsuit Top (view 2)ZeroXposur Swimsuit Top (view 1)
    View Product: ZeroXposur Swimsuit Top

    ZeroXposur

    Swimsuit Top
    Size 12
    $13.99 $9.79 30% off with code THANKU
    78% off estimated retail
    Seafolly Swimsuit Bottoms (view 2)Seafolly Swimsuit Bottoms (view 1)Price Drop
    View Product: Seafolly Swimsuit Bottoms

    Seafolly

    Swimsuit Bottoms
    Size 12
    $17.99 $11.69 35% off with code THANKU
    84% off estimated retail
    ABS Allen Schwartz Swimsuit Top (view 2)ABS Allen Schwartz Swimsuit Top (view 1)Price Drop
    View Product: ABS Allen Schwartz Swimsuit Top

    ABS Allen Schwartz

    Swimsuit Top
    Size 12
    $7.99 $6.39 20% off with code THANKU
    89% off estimated retail
    Assorted Brands Swimsuit Bottoms (view 2)Assorted Brands Swimsuit Bottoms (view 1)Price Drop
    View Product: Assorted Brands Swimsuit Bottoms

    Assorted Brands

    Swimsuit Bottoms
    Size 12
    $10.99 $8.24 25% off with code THANKU
    56% off estimated retail
    Gottex Swimsuit Bottoms (view 2)Gottex Swimsuit Bottoms (view 1)Price Drop
    View Product: Gottex Swimsuit Bottoms

    Gottex

    Swimsuit Bottoms
    Size 12
    $11.99 $7.79 35% off with code THANKU
    84% off estimated retail
    Shein Swimsuit Bottoms (view 2)Shein Swimsuit Bottoms (view 1)Price Drop
    View Product: Shein Swimsuit Bottoms

    Shein

    Swimsuit Bottoms
    Size 12
    $9.99 $7.99 20% off with code THANKU
    37% off estimated retail
    Seafolly Swimsuit Bottoms (view 2)Seafolly Swimsuit Bottoms (view 1)Price Drop
    View Product: Seafolly Swimsuit Bottoms

    Seafolly

    Swimsuit Bottoms
    Size 12
    $9.99 $7.49 25% off with code THANKU
    91% off estimated retail
    H&M Swimsuit Top (view 2)H&M Swimsuit Top (view 1)Price Drop
    View Product: H&M Swimsuit Top

    H&M

    Swimsuit Top
    Size 12
    $8.99 $7.19 20% off with code THANKU
    52% off estimated retail
    H&M Swimsuit Bottom (view 2)H&M Swimsuit Bottom (view 1)Price Drop
    View Product: H&M Swimsuit Bottom

    H&M

    Swimsuit Bottom
    Size 12
    $8.99 $7.19 20% off with code THANKU
    35% off estimated retail
    Allen B. by Allen Schwartz Swimsuit Top (view 2)Allen B. by Allen Schwartz Swimsuit Top (view 1)Price Drop
    View Product: Allen B. by Allen Schwartz Swimsuit Top

    Allen B. by Allen Schwartz

    Swimsuit Top
    Size 12
    $7.99 $6.39 20% off with code THANKU
    86% off estimated retail
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