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.

171 items·
Swim by Cacique Size 24 Plus
View Product: Swim by Cacique Size 24 Plus

Swim by Cacique

Size 24 Plus
$28.99 $71
Swim by Cacique Size 26 Plus
View Product: Swim by Cacique Size 26 Plus

Swim by Cacique

Size 26 Plus
$28.99 $71
Unbranded Size 3X Plus
View Product: Unbranded Size 3X Plus

Unbranded

Size 3X Plus
$11.99 $24
Unbranded Size 3X Plus
View Product: Unbranded Size 3X Plus

Unbranded

Size 3X Plus
$13.99 $24
Jaclyn Smith Size 24 Plus
View Product: Jaclyn Smith Size 24 Plus

Jaclyn Smith

Size 24 Plus
$11.99 $18
Old Navy Size 3X Plus
View Product: Old Navy Size 3X Plus

Old Navy

Size 3X Plus
$12.99 $20
Bongo Plus Size 3X Plus
View Product: Bongo Plus Size 3X Plus

Bongo Plus

Size 3X Plus
$15.99 $24
Xhilaration Size 24 Plus
View Product: Xhilaration Size 24 Plus

Xhilaration

Size 24 Plus
$8.99 $12
Tropical Escape Size 24 Plus
View Product: Tropical Escape Size 24 Plus

Tropical Escape

Size 24 Plus
$18.99 $54
Assorted Brands Size 3X Plus
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View Product: Assorted Brands Size 3X Plus

Assorted Brands

Size 3X Plus
$12.99 $24
Cocoship Size 3X Plus
View Product: Cocoship Size 3X Plus

Cocoship

Size 3X Plus
$17.99 $27
Torrid Size 3X Plus
View Product: Torrid Size 3X Plus

Torrid

Size 3X Plus
$14.99 $30
Boutique + Size 3X Plus
View Product: Boutique + Size 3X Plus

Boutique +

Size 3X Plus
$27.99 $36
Shein Size 3X Plus
View Product: Shein Size 3X Plus

Shein

Size 3X Plus
$11.99 $15
Delta Burke Size 24 Plus
View Product: Delta Burke Size 24 Plus

Delta Burke

Size 24 Plus
$14.99 $30
Swim by Cacique Size 28 Plus
View Product: Swim by Cacique Size 28 Plus

Swim by Cacique

Size 28 Plus
$21.99 $48
Catalina Size 3X Plus
View Product: Catalina Size 3X Plus

Catalina

Size 3X Plus
$11.99 $18
Fashion Bug Size 26 Plus
View Product: Fashion Bug Size 26 Plus

Fashion Bug

Size 26 Plus
$14.99 $27
Catalina Size 3X Plus
View Product: Catalina Size 3X Plus

Catalina

Size 3X Plus
$6.99 $12
Catalina Size 3X Plus
View Product: Catalina Size 3X Plus

Catalina

Size 3X Plus
$8.99 $12
Adore Me Size 3X Plus
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View Product: Adore Me Size 3X Plus

Adore Me

Size 3X Plus
$15.99 $30
Shein Size 3X Plus
View Product: Shein Size 3X Plus

Shein

Size 3X Plus
$11.99 $15

$9.59 20% off with

Shein Size 3X Plus
View Product: Shein Size 3X Plus

Shein

Size 3X Plus
$12.99 $15

$10.39 20% off with

Shein Size 3X Plus
View Product: Shein Size 3X Plus

Shein

Size 3X Plus
$20.99 $22

$16.79 20% off with

Catalina Size 3X Plus
View Product: Catalina Size 3X Plus

Catalina

Size 3X Plus
$11.99 $18

$9.59 20% off with

White Stag Size 3X Plus
View Product: White Stag Size 3X Plus

White Stag

Size 3X Plus
$13.99 $18

$11.19 20% off with

Catalina Size 3X Plus
View Product: Catalina Size 3X Plus

Catalina

Size 3X Plus
$7.99 $12

$6.39 20% off with

Delta Burke Size 24 Plus
View Product: Delta Burke Size 24 Plus

Delta Burke

Size 24 Plus
$23.99 $30

$19.19 20% off with

Swim by Cacique Size 24 Plus
View Product: Swim by Cacique Size 24 Plus

Swim by Cacique

Size 24 Plus
$30.99 $71

$24.79 20% off with

Old Navy Size 3X Plus
View Product: Old Navy Size 3X Plus

Old Navy

Size 3X Plus
$15.99 $25

$12.79 20% off with

Unique Vintage Size 3X Plus
View Product: Unique Vintage Size 3X Plus

Unique Vintage

Size 3X Plus
$22.99 $48

$18.39 20% off with

Unbranded Size 3X Plus
View Product: Unbranded Size 3X Plus

Unbranded

Size 3X Plus
$10.99 $24

$8.79 20% off with

Old Navy Size 3X Plus
View Product: Old Navy Size 3X Plus

Old Navy

Size 3X Plus
$12.99 $20

$10.39 20% off with

Merona Size 24 Plus
View Product: Merona Size 24 Plus

Merona

Size 24 Plus
$12.99 $18

$10.39 20% off with

Swimsuits for all Size 26 Plus
View Product: Swimsuits for all Size 26 Plus

Swimsuits for all

Size 26 Plus
$28.99 $36

$23.19 20% off with

White Stag Size 3X Plus
View Product: White Stag Size 3X Plus

White Stag

Size 3X Plus
$10.99 $18

$8.79 20% off with

Assorted Brands Size 3X Plus
View Product: Assorted Brands Size 3X Plus

Assorted Brands

Size 3X Plus
$10.99 $24

$8.79 20% off with

Anne Cole Size 3X Plus
View Product: Anne Cole Size 3X Plus

Anne Cole

Size 3X Plus
$20.99 $71

$16.79 20% off with

Swimsuits for all Size 24 Plus
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View Product: Swimsuits for all Size 24 Plus

Swimsuits for all

Size 24 Plus
$28.99 $36

$23.19 20% off with

Swimsuits for all Size 24 Plus
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View Product: Swimsuits for all Size 24 Plus

Swimsuits for all

Size 24 Plus
$28.99 $36

$23.19 20% off with

Free Country Size 24 Plus
View Product: Free Country Size 24 Plus

Free Country

Size 24 Plus
$4.99 $24

$3.99 20% off with

No Boundaries Size 3X Plus
View Product: No Boundaries Size 3X Plus

No Boundaries

Size 3X Plus
$9.99 $18

$7.99 20% off with

Swim by Cacique Size 28 Plus
View Product: Swim by Cacique Size 28 Plus

Swim by Cacique

Size 28 Plus
$21.99 $48

$17.59 20% off with

Swim by Cacique Size 24 Plus
View Product: Swim by Cacique Size 24 Plus

Swim by Cacique

Size 24 Plus
$19.99 $48

$15.99 20% off with

Cover Me Size 3X Plus
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View Product: Cover Me Size 3X Plus

Cover Me

Size 3X Plus
$56.99 $71

$45.59 20% off with

Anne Cole Size 24 Plus
View Product: Anne Cole Size 24 Plus

Anne Cole

Size 24 Plus
$19.99 $48

$15.99 20% off with

Catherines Size 24 Plus
View Product: Catherines Size 24 Plus

Catherines

Size 24 Plus
$15.99 $30

$12.79 20% off with

Catalina Size 3X Plus
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View Product: Catalina Size 3X Plus

Catalina

Size 3X Plus
$8.99 $14.48

$7.19 20% off with

Swimsuits for all Size 24 Plus
View Product: Swimsuits for all Size 24 Plus

Swimsuits for all

Size 24 Plus
$14.99 $36

$11.99 20% off with

Ava & Viv Size 26 Plus
View Product: Ava & Viv Size 26 Plus

Ava & Viv

Size 26 Plus
$16.99 $28

$13.59 20% off with