Trending Categories
Trending Brands
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.
47,425 items
Sort by:
![Swim by Cacique Swimsuit Top (view 2)](https://cf-assets-thredup.thredup.com/assets/610744084/complimentary.jpg)
![Swim by Cacique Swimsuit Top (view 1)](https://cf-assets-thredup.thredup.com/assets/610744014/complimentary.jpg)
Swim by Cacique
Swimsuit Top
Size 1X Plus
$20.99 $11.54 45% off with code GOBIG
58% off estimated retail![Lauren by Ralph Lauren One Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/610526065/complimentary.jpg)
![Lauren by Ralph Lauren One Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/610526013/complimentary.jpg)
Lauren by Ralph Lauren
One Piece Swimsuit
Size 12
$42.99 $23.64 45% off with code GOBIG
66% off estimated retail![Victoria's Secret Pink Swimsuit Top (view 2)](https://cf-assets-thredup.thredup.com/assets/610713430/complimentary.jpg)
![Victoria's Secret Pink Swimsuit Top (view 1)](https://cf-assets-thredup.thredup.com/assets/610713374/complimentary.jpg)
Victoria's Secret Pink
Swimsuit Top
Size Lg
$15.99 $8.79 45% off with code GOBIG
36% off estimated retail![Lauren by Ralph Lauren Swimsuit Top (view 2)](https://cf-assets-thredup.thredup.com/assets/610206633/complimentary.jpg)
![Lauren by Ralph Lauren Swimsuit Top (view 1)](https://cf-assets-thredup.thredup.com/assets/610206614/complimentary.jpg)
Lauren by Ralph Lauren
Swimsuit Top
Size 8
$31.99 $17.59 45% off with code GOBIG
66% off estimated retail![Lauren by Ralph Lauren Swimsuit Top (view 2)](https://cf-assets-thredup.thredup.com/assets/577569433/complimentary.jpg)
![Lauren by Ralph Lauren Swimsuit Top (view 1)](https://cf-assets-thredup.thredup.com/assets/577569258/complimentary.jpg)
Lauren by Ralph Lauren
Swimsuit Top
Size 10
$21.99 $12.09 45% off with code GOBIG
68% off estimated retail![Lauren by Ralph Lauren One Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/611253983/complimentary.jpg)
![Lauren by Ralph Lauren One Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/611253949/complimentary.jpg)
Lauren by Ralph Lauren
One Piece Swimsuit
Size 10
$40.99 $22.54 45% off with code GOBIG
68% off estimated retail![Senita Athletics One Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/610711201/complimentary.jpg)
![Senita Athletics One Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/610711047/complimentary.jpg)
Senita Athletics
One Piece Swimsuit
Size Med
$14.99 $8.24 45% off with code GOBIG
48% off estimated retail![MICHAEL Michael Kors Swimsuit Bottoms (view 2)](https://cf-assets-thredup.thredup.com/assets/608366269/complimentary.jpg)
![MICHAEL Michael Kors Swimsuit Bottoms (view 1)](https://cf-assets-thredup.thredup.com/assets/608366251/complimentary.jpg)
MICHAEL Michael Kors
Swimsuit Bottoms
Size Lg
$23.99 $13.19 45% off with code GOBIG
63% off estimated retail![Stoney Clover Lane x Target Swimsuit Bottoms (view 2)](https://cf-assets-thredup.thredup.com/assets/610582702/complimentary.jpg)
![Stoney Clover Lane x Target Swimsuit Bottoms (view 1)](https://cf-assets-thredup.thredup.com/assets/610582654/complimentary.jpg)
Stoney Clover Lane x Target
Swimsuit Bottoms
Size XL
$9.99 $5.49 45% off with code GOBIG
23% off estimated retail![Assorted Brands One Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/610451418/complimentary.jpg)
![Assorted Brands One Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/610451350/complimentary.jpg)
Assorted Brands
One Piece Swimsuit
Size 12
$18.99 $10.44 45% off with code GOBIG
50% off estimated retail![Lauren by Ralph Lauren Swimsuit Top (view 2)](https://cf-assets-thredup.thredup.com/assets/610095598/complimentary.jpg)
![Lauren by Ralph Lauren Swimsuit Top (view 1)](https://cf-assets-thredup.thredup.com/assets/610095558/complimentary.jpg)
Lauren by Ralph Lauren
Swimsuit Top
Size 4
$32.99 $18.14 45% off with code GOBIG
65% off estimated retail![Victoria's Secret Pink Swimsuit Bottoms (view 2)](https://cf-assets-thredup.thredup.com/assets/609647764/complimentary.jpg)
![Victoria's Secret Pink Swimsuit Bottoms (view 1)](https://cf-assets-thredup.thredup.com/assets/609647751/complimentary.jpg)
Victoria's Secret Pink
Swimsuit Bottoms
Size Med
$16.99 $9.34 45% off with code GOBIG
32% off estimated retail![Unbranded One Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/611316416/complimentary.jpg)
![Unbranded One Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/611316391/complimentary.jpg)
Unbranded
One Piece Swimsuit
Size 18 Plus
$19.99 $10.99 45% off with code GOBIG
47% off estimated retail![Assorted Brands One Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/610895940/complimentary.jpg)
![Assorted Brands One Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/610895852/complimentary.jpg)
Assorted Brands
One Piece Swimsuit
Size XL
$22.99 $12.64 45% off with code GOBIG
39% off estimated retail![MICHAEL Michael Kors Swimsuit Bottoms (view 2)](https://cf-assets-thredup.thredup.com/assets/611144652/complimentary.jpg)
![MICHAEL Michael Kors Swimsuit Bottoms (view 1)](https://cf-assets-thredup.thredup.com/assets/611144651/complimentary.jpg)
MICHAEL Michael Kors
Swimsuit Bottoms
Size Med
$32.99 $18.14 45% off with code GOBIG
50% off estimated retail![Anne Cole Signature Swimsuit Bottoms (view 2)](https://cf-assets-thredup.thredup.com/assets/611012749/complimentary.jpg)
![Anne Cole Signature Swimsuit Bottoms (view 1)](https://cf-assets-thredup.thredup.com/assets/611012717/complimentary.jpg)
Anne Cole Signature
Swimsuit Bottoms
Size Lg
$10.99 $6.04 45% off with code GOBIG
65% off estimated retail![MICHAEL Michael Kors Swimsuit Top (view 2)](https://cf-assets-thredup.thredup.com/assets/610935771/complimentary.jpg)
![MICHAEL Michael Kors Swimsuit Top (view 1)](https://cf-assets-thredup.thredup.com/assets/610935718/complimentary.jpg)
MICHAEL Michael Kors
Swimsuit Top
Size XS
$50.99 $28.04 45% off with code GOBIG
43% off estimated retail![Diva by Rachel Pappo One Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/611058644/complimentary.jpg)
![Diva by Rachel Pappo One Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/611058697/complimentary.jpg)
Diva by Rachel Pappo
One Piece Swimsuit
Size 6
$21.99 $12.09 45% off with code GOBIG
61% off estimated retail![Bleu Rod Beattie One Piece Swimsuit (view 2)](https://cf-assets-thredup.thredup.com/assets/610955243/complimentary.jpg)
![Bleu Rod Beattie One Piece Swimsuit (view 1)](https://cf-assets-thredup.thredup.com/assets/610955216/complimentary.jpg)
Bleu Rod Beattie
One Piece Swimsuit
Size 4
$31.99 $17.59 45% off with code GOBIG
72% off estimated retail