Women’s Swimwear

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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.

126 items·
Fit 4 U Size 20 Plus

View Product: Fit 4 U Size 20 Plus

Fit 4 U

Size 20 Plus
$31.99 $36
ModCloth Size 2X Plus

View Product: ModCloth Size 2X Plus

ModCloth

Size 2X Plus
$10.99 $30
Aqua Green Size 20 Plus

View Product: Aqua Green Size 20 Plus

Aqua Green

Size 20 Plus
$16.99 $24
Basic Editions Size 20 Plus

View Product: Basic Editions Size 20 Plus

Basic Editions

Size 20 Plus
$12.99 $18
Old Navy Size 2X Plus

View Product: Old Navy Size 2X Plus

Old Navy

Size 2X Plus
$16.99 $25

$11.89 30% off with

Swimsuits for all Size 22 Plus

View Product: Swimsuits for all Size 22 Plus

Swimsuits for all

Size 22 Plus
$17.99 $36
Forever 21 Size 2X Plus
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View Product: Forever 21 Size 2X Plus

Forever 21

Size 2X Plus
$10.99 $15.9
Forever 21 Size 2X Plus
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View Product: Forever 21 Size 2X Plus

Forever 21

Size 2X Plus
$14.99 $15.9

$10.49 30% off with

Swimsuits for all Size 22 Plus

View Product: Swimsuits for all Size 22 Plus

Swimsuits for all

Size 22 Plus
$18.99 $54

$13.29 30% off with

Assorted Brands Size 2X Plus

View Product: Assorted Brands Size 2X Plus

Assorted Brands

Size 2X Plus
$21.99 $36

$15.39 30% off with

Fashion Nova Size 2X Plus

View Product: Fashion Nova Size 2X Plus

Fashion Nova

Size 2X Plus
$12.99 $24

$9.09 30% off with

Aqua Green Size 22 Plus
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View Product: Aqua Green Size 22 Plus

Aqua Green

Size 22 Plus
$21.99 $32.99

$15.39 30% off with

Swimsuits for all Size 22 Plus

View Product: Swimsuits for all Size 22 Plus

Swimsuits for all

Size 22 Plus
$17.99 $36

$12.59 30% off with

Collections by Michelle Stuart Size 2X Plus

View Product: Collections by Michelle Stuart Size 2X Plus

Collections by Michelle Stuart

Size 2X Plus
$9.99 $15

$6.99 30% off with

Assorted Brands Size 2X Plus

View Product: Assorted Brands Size 2X Plus

Assorted Brands

Size 2X Plus
$17.99 $36

$12.59 30% off with

Assorted Brands Size 2X Plus

View Product: Assorted Brands Size 2X Plus

Assorted Brands

Size 2X Plus
$17.99 $36

$12.59 30% off with

CZ Cover-Ups Size 2X Plus
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View Product: CZ Cover-Ups Size 2X Plus

CZ Cover-Ups

Size 2X Plus
$8.99 $10.99
Catalina Size 2X Plus

View Product: Catalina Size 2X Plus

Catalina

Size 2X Plus
$7.99 $12
Jessica Simpson Size 2X Plus
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View Product: Jessica Simpson Size 2X Plus

Jessica Simpson

Size 2X Plus
$34.99 $134

$24.49 30% off with

Nasty Gal Inc. Size 20 Plus
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View Product: Nasty Gal Inc. Size 20 Plus

Nasty Gal Inc.

Size 20 Plus
$13.99 $45

$9.79 30% off with

Unbranded Size 2X Plus

View Product: Unbranded Size 2X Plus

Unbranded

Size 2X Plus
$21.99 $36

$15.39 30% off with

White Stag Size 2X Plus

View Product: White Stag Size 2X Plus

White Stag

Size 2X Plus
$14.99 $18

$10.49 30% off with

Unbranded Size 2X Plus

View Product: Unbranded Size 2X Plus

Unbranded

Size 2X Plus
$12.99 $24

$9.09 30% off with

Unbranded Size 2X Plus

View Product: Unbranded Size 2X Plus

Unbranded

Size 2X Plus
$10.99 $24

$7.69 30% off with

Adore Me Size 2X Plus

View Product: Adore Me Size 2X Plus

Adore Me

Size 2X Plus
$19.99 $45

$13.99 30% off with

Libian Size 2X Plus

View Product: Libian Size 2X Plus

Libian

Size 2X Plus
$12.99 $22
Apt. 9 Size 2X Plus

View Product: Apt. 9 Size 2X Plus

Apt. 9

Size 2X Plus
$22.99 $40

$16.09 30% off with

Croft & Barrow Size 22 Plus

View Product: Croft & Barrow Size 22 Plus

Croft & Barrow

Size 22 Plus
$13.99 $18

$9.79 30% off with

Unbranded Size 2X Plus

View Product: Unbranded Size 2X Plus

Unbranded

Size 2X Plus
$16.99 $36

$11.89 30% off with

Swimsuits for all Size 20 Plus

View Product: Swimsuits for all Size 20 Plus

Swimsuits for all

Size 20 Plus
$14.99 $36

$10.49 30% off with

Swimsuits for all Size 20 Plus

View Product: Swimsuits for all Size 20 Plus

Swimsuits for all

Size 20 Plus
$21.99 $54

$15.39 30% off with

Assorted Brands Size 2X Plus
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View Product: Assorted Brands Size 2X Plus

Assorted Brands

Size 2X Plus
$11.99 $24

$8.39 30% off with

Peppermint Bay Size 2X Plus

View Product: Peppermint Bay Size 2X Plus

Peppermint Bay

Size 2X Plus
$12.99 $27

$9.09 30% off with

Avenue Size 30 Plus

View Product: Avenue Size 30 Plus

Avenue

Size 30 Plus
$25.99 $45

$18.19 30% off with

Unbranded Size 2X Plus

View Product: Unbranded Size 2X Plus

Unbranded

Size 2X Plus
$24.99 $36

$17.49 30% off with

Unbranded Size 2X Plus

View Product: Unbranded Size 2X Plus

Unbranded

Size 2X Plus
$18.99 $36

$13.29 30% off with

Sand N Sun Size 2X Plus

View Product: Sand N Sun Size 2X Plus

Sand N Sun

Size 2X Plus
$9.99 $18

$6.99 30% off with

Arena Size 30 Plus

View Product: Arena Size 30 Plus

Arena

Size 30 Plus
$30.99 $71

$21.69 30% off with

Marie Melli Size 2X Plus
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View Product: Marie Melli Size 2X Plus

Marie Melli

Size 2X Plus
$20.99 $45

$14.69 30% off with

Swimsuits for all Size 22 Plus

View Product: Swimsuits for all Size 22 Plus

Swimsuits for all

Size 22 Plus
$13.99 $36

$9.79 30% off with

Catalina Size 2X Plus

View Product: Catalina Size 2X Plus

Catalina

Size 2X Plus
$11.99 $12
Xhilaration Size 22 Plus
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View Product: Xhilaration Size 22 Plus

Xhilaration

Size 22 Plus
$8.99 $12
SWIM 365 Size 30 Plus

View Product: SWIM 365 Size 30 Plus

SWIM 365

Size 30 Plus
$11.99 $12
Unbranded Size 2X Plus

View Product: Unbranded Size 2X Plus

Unbranded

Size 2X Plus
$12.99 $24

$9.09 30% off with

Unbranded Size 2X Plus

View Product: Unbranded Size 2X Plus

Unbranded

Size 2X Plus
$12.99 $24

$9.09 30% off with

Xhilaration Size 20 Plus

View Product: Xhilaration Size 20 Plus

Xhilaration

Size 20 Plus
$12.99 $12

$9.09 30% off with

Unbranded Size 2X Plus

View Product: Unbranded Size 2X Plus

Unbranded

Size 2X Plus
$13.99 $24

$9.79 30% off with

Assorted Brands Size 2X Plus

View Product: Assorted Brands Size 2X Plus

Assorted Brands

Size 2X Plus
$16.99 $24

$11.89 30% off with

It Figures! Size 22 Plus

View Product: It Figures! Size 22 Plus

It Figures!

Size 22 Plus
$17.99 $24

$12.59 30% off with

It Figures! Size 22 Plus

View Product: It Figures! Size 22 Plus

It Figures!

Size 22 Plus
$17.99 $24

$12.59 30% off with