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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.

$25 - $50Remove filter
63 items
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    Speedo One Piece Swimsuit (view 2)Speedo One Piece Swimsuit (view 1)New With Tags
    View Product: Speedo One Piece Swimsuit

    Speedo

    One Piece Swimsuit
    Size 16
    $43.99
    39% off estimated retail
    La Blanca One Piece Swimsuit (view 2)La Blanca One Piece Swimsuit (view 1)New With Tags
    View Product: La Blanca One Piece Swimsuit

    La Blanca

    One Piece Swimsuit
    Size 16
    $27.99
    50% off estimated retail
    Magicsuit Swimsuit Top (view 2)Magicsuit Swimsuit Top (view 1)New With Tags
    View Product: Magicsuit Swimsuit Top

    Magicsuit

    Swimsuit Top
    Size 16
    $29.99
    60% off estimated retail
    Miraclesuit One Piece Swimsuit (view 2)Miraclesuit One Piece Swimsuit (view 1)
    View Product: Miraclesuit One Piece Swimsuit

    Miraclesuit

    One Piece Swimsuit
    Size 16
    $40.99
    64% off estimated retail
    The Edit. Forever Classic, Get perfectly polished in trousers, blazers, and more. Shop The Edit
    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
    Maxine of Hollywood One Piece Swimsuit (view 2)Maxine of Hollywood One Piece Swimsuit (view 1)
    View Product: Maxine of Hollywood One Piece Swimsuit

    Maxine of Hollywood

    One Piece Swimsuit
    Size 16
    $29.99
    60% 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 16
    $27.99
    70% off estimated retail
    Lauren by Ralph Lauren Swimsuit Top (view 2)Lauren by Ralph Lauren Swimsuit Top (view 1)
    View Product: Lauren by Ralph Lauren Swimsuit Top

    Lauren by Ralph Lauren

    Swimsuit Top
    Size 16
    $31.99
    66% off estimated retail
    Maxine of Hollywood One Piece Swimsuit (view 2)Maxine of Hollywood One Piece Swimsuit (view 1)
    View Product: Maxine of Hollywood One Piece Swimsuit

    Maxine of Hollywood

    One Piece Swimsuit
    Size 16
    $29.99
    60% off estimated retail
    Maaji Swimsuit Top (view 2)Maaji Swimsuit Top (view 1)New With Tags
    View Product: Maaji Swimsuit Top

    Maaji

    Swimsuit Top
    Size 16
    $27.99
    68% off estimated retail
    Sea Level Australia One Piece Swimsuit (view 2)Sea Level Australia One Piece Swimsuit (view 1)
    View Product: Sea Level Australia One Piece Swimsuit

    Sea Level Australia

    One Piece Swimsuit
    Size 16
    $41.99
    55% off estimated retail
    Magicsuit Swimsuit Top (view 2)Magicsuit Swimsuit Top (view 1)
    View Product: Magicsuit Swimsuit Top

    Magicsuit

    Swimsuit Top
    Size 16
    $36.99
    51% off estimated retail
    Swim by Cacique Rash Guard (view 2)Swim by Cacique Rash Guard (view 1)
    View Product: Swim by Cacique Rash Guard

    Swim by Cacique

    Rash Guard
    Size 16
    $30.99
    59% off estimated retail
    La Blanca One Piece Swimsuit (view 2)La Blanca One Piece Swimsuit (view 1)
    View Product: La Blanca One Piece Swimsuit

    La Blanca

    One Piece Swimsuit
    Size 16
    $34.99
    38% 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 16
    $45.99
    37% off estimated retail
    City Chic One Piece Swimsuit (view 2)City Chic One Piece Swimsuit (view 1)New With Tags
    View Product: City Chic One Piece Swimsuit

    City Chic

    One Piece Swimsuit
    Size 16 Plus
    $36.99
    61% 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 16
    $42.99
    41% off estimated retail
    SKYE Swimsuit Bottoms (view 2)SKYE Swimsuit Bottoms (view 1)New With Tags
    View Product: SKYE Swimsuit Bottoms

    SKYE

    Swimsuit Bottoms
    Size 0X Plus
    $36.99
    67% off estimated retail
    Juicy Couture Swimsuit Bottoms (view 2)Juicy Couture Swimsuit Bottoms (view 1)
    View Product: Juicy Couture Swimsuit Bottoms

    Juicy Couture

    Swimsuit Bottoms
    Size 16
    $41.99
    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 16
    $30.99
    67% off estimated retail
    Miraclesuit One Piece Swimsuit (view 2)Miraclesuit One Piece Swimsuit (view 1)
    View Product: Miraclesuit One Piece Swimsuit

    Miraclesuit

    One Piece Swimsuit
    Size 16
    $42.99
    62% off estimated retail
    InstantFigure Swimsuit Bottoms (view 2)InstantFigure Swimsuit Bottoms (view 1)
    View Product: InstantFigure Swimsuit Bottoms

    InstantFigure

    Swimsuit Bottoms
    Size 16
    $29.99
    70% 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 16
    $31.99
    66% off estimated retail
    Miraclesuit One Piece Swimsuit (view 2)Miraclesuit One Piece Swimsuit (view 1)
    View Product: Miraclesuit One Piece Swimsuit

    Miraclesuit

    One Piece Swimsuit
    Size 16
    $40.99
    64% 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 16
    $37.99
    72% 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 16
    $41.99
    42% off estimated retail
    Athleta Board Shorts (view 2)Athleta Board Shorts (view 1)
    View Product: Athleta Board Shorts

    Athleta

    Board Shorts
    Size 16
    $29.99
    49% 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 16
    $38.99 $19.50 50% off with code THANKU
    69% off estimated retail
    Adidas One Piece Swimsuit (view 2)Adidas One Piece Swimsuit (view 1)
    View Product: Adidas One Piece Swimsuit

    Adidas

    One Piece Swimsuit
    Size 30 Plus
    $29.99 $19.49 35% off with code THANKU
    60% off estimated retail
    Talbots Swimsuit Top (view 2)Talbots Swimsuit Top (view 1)
    View Product: Talbots Swimsuit Top

    Talbots

    Swimsuit Top
    Size 16
    $35.99 $21.59 40% off with code THANKU
    55% off estimated retail
    Talbots Swimsuit Bottoms (view 2)Talbots Swimsuit Bottoms (view 1)
    View Product: Talbots Swimsuit Bottoms

    Talbots

    Swimsuit Bottoms
    Size 16
    $29.99 $17.99 40% off with code THANKU
    62% off estimated retail
    Miraclesuit Swimsuit Top (view 2)Miraclesuit Swimsuit Top (view 1)
    View Product: Miraclesuit Swimsuit Top

    Miraclesuit

    Swimsuit Top
    Size 16
    $28.99 $11.60 60% off with code THANKU
    61% 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 16
    $35.99 $16.20 55% off with code THANKU
    50% 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 16
    $42.99 $34.39 20% off with code THANKU
    69% 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 16
    $38.99 $15.60 60% off with code THANKU
    46% off estimated retail
    Profile by Gottex One Piece Swimsuit (view 2)Profile by Gottex One Piece Swimsuit (view 1)
    View Product: Profile by Gottex One Piece Swimsuit

    Profile by Gottex

    One Piece Swimsuit
    Size 16
    $39.99 $20.00 50% off with code THANKU
    70% off estimated retail
    Seafolly Swimsuit Top (view 2)Seafolly Swimsuit Top (view 1)
    View Product: Seafolly Swimsuit Top

    Seafolly

    Swimsuit Top
    Size 16
    $39.99 $23.99 40% off with code THANKU
    65% off estimated retail
    J.Crew One Piece Swimsuit (view 2)J.Crew One Piece Swimsuit (view 1)
    View Product: J.Crew One Piece Swimsuit

    J.Crew

    One Piece Swimsuit
    Size 16
    $30.99 $15.50 50% off with code THANKU
    75% off estimated retail
    Lauren by Ralph Lauren Swimsuit Bottoms (view 2)Lauren by Ralph Lauren Swimsuit Bottoms (view 1)
    View Product: Lauren by Ralph Lauren Swimsuit Bottoms

    Lauren by Ralph Lauren

    Swimsuit Bottoms
    Size 16
    $30.99 $17.04 45% off with code THANKU
    47% off estimated retail
    Seafolly Swimsuit Top (view 2)Seafolly Swimsuit Top (view 1)New With Tags
    View Product: Seafolly Swimsuit Top

    Seafolly

    Swimsuit Top
    Size 16
    $29.99 $17.99 40% off with code THANKU
    73% off estimated retail
    Seafolly Swimsuit Bottoms (view 2)Seafolly Swimsuit Bottoms (view 1)New With Tags
    View Product: Seafolly Swimsuit Bottoms

    Seafolly

    Swimsuit Bottoms
    Size 16
    $35.99 $21.59 40% off with code THANKU
    68% off estimated retail
    Maxine of Hollywood Swimsuit Cover Up (view 2)Maxine of Hollywood Swimsuit Cover Up (view 1)
    View Product: Maxine of Hollywood Swimsuit Cover Up

    Maxine of Hollywood

    Swimsuit Cover Up
    Size 16
    $28.99 $15.94 45% off with code THANKU
    61% 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 16
    $32.99 $14.85 55% off with code THANKU
    65% off estimated retail
    ViX Swimsuit Top (view 2)ViX Swimsuit Top (view 1)
    View Product: ViX Swimsuit Top

    ViX

    Swimsuit Top
    Size 0X Plus
    $41.99 $25.19 40% off with code THANKU
    73% 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 16
    $40.99 $16.40 60% off with code THANKU
    43% off estimated retail
    Lauren by Ralph Lauren Swimsuit Bottoms (view 2)Lauren by Ralph Lauren Swimsuit Bottoms (view 1)New With Tags
    View Product: Lauren by Ralph Lauren Swimsuit Bottoms

    Lauren by Ralph Lauren

    Swimsuit Bottoms
    Size 16
    $31.99 $17.59 45% off with code THANKU
    62% off estimated retail
    MICHAEL Michael Kors Swimsuit Top (view 2)MICHAEL Michael Kors Swimsuit Top (view 1)
    View Product: MICHAEL Michael Kors Swimsuit Top

    MICHAEL Michael Kors

    Swimsuit Top
    Size 16
    $50.99 $30.59 40% off with code THANKU
    43% off estimated retail
    Beach House Two Piece Swimsuit (view 2)Beach House Two Piece Swimsuit (view 1)
    View Product: Beach House Two Piece Swimsuit

    Beach House

    Two Piece Swimsuit
    Size 16
    $33.99 $22.09 35% off with code THANKU
    55% off estimated retail
    Bond-Eye Australia One Piece Swimsuit (view 2)Bond-Eye Australia One Piece Swimsuit (view 1)
    View Product: Bond-Eye Australia One Piece Swimsuit

    Bond-Eye Australia

    One Piece Swimsuit
    Size 16
    $30.99 $20.14 35% off with code THANKU
    67% off estimated retail
    Liz Claiborne One Piece Swimsuit (view 2)Liz Claiborne One Piece Swimsuit (view 1)
    View Product: Liz Claiborne One Piece Swimsuit

    Liz Claiborne

    One Piece Swimsuit
    Size 16
    $27.99 $18.19 35% off with code THANKU
    58% off estimated retail
    GabiFresh x Swimsuits For All Swimsuit Bottoms (view 2)GabiFresh x Swimsuits For All Swimsuit Bottoms (view 1)
    View Product: GabiFresh x Swimsuits For All Swimsuit Bottoms

    GabiFresh x Swimsuits For All

    Swimsuit Bottoms
    Size 16
    $28.99 $15.94 45% off with code THANKU
    71% off estimated retail
    L Space Swimsuit Top (view 2)L Space Swimsuit Top (view 1)New With Tags
    View Product: L Space Swimsuit Top

    L Space

    Swimsuit Top
    Size 0X Plus
    $29.99 $19.49 35% off with code THANKU
    53% off estimated retail
    Profile by Gottex One Piece Swimsuit (view 2)Profile by Gottex One Piece Swimsuit (view 1)
    View Product: Profile by Gottex One Piece Swimsuit

    Profile by Gottex

    One Piece Swimsuit
    Size 16
    $49.99 $25.00 50% off with code THANKU
    62% 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 16
    $30.99 $13.95 55% off with code THANKU
    67% off estimated retail
    City Chic One Piece Swimsuit (view 2)City Chic One Piece Swimsuit (view 1)
    View Product: City Chic One Piece Swimsuit

    City Chic

    One Piece Swimsuit
    Size 16 Plus
    $37.99 $17.10 55% off with code THANKU
    60% off estimated retail
    Classics by Jantzen One Piece Swimsuit (view 2)Classics by Jantzen One Piece Swimsuit (view 1)
    View Product: Classics by Jantzen One Piece Swimsuit

    Classics by Jantzen

    One Piece Swimsuit
    Size 16
    $38.99 $25.34 35% off with code THANKU
    66% off estimated retail
    Ceeb One Piece Swimsuit (view 2)Ceeb One Piece Swimsuit (view 1)
    View Product: Ceeb One Piece Swimsuit

    Ceeb

    One Piece Swimsuit
    Size 16
    $28.99 $18.84 35% off with code THANKU
    61% off estimated retail
    Gottex One Piece Swimsuit (view 2)Gottex One Piece Swimsuit (view 1)
    View Product: Gottex One Piece Swimsuit

    Gottex

    One Piece Swimsuit
    Size 16
    $34.99 $19.24 45% off with code THANKU
    69% off estimated retail
    Sun Seeker One Piece Swimsuit (view 2)Sun Seeker One Piece Swimsuit (view 1)
    View Product: Sun Seeker One Piece Swimsuit

    Sun Seeker

    One Piece Swimsuit
    Size 16
    $43.99 $28.59 35% off with code THANKU
    76% off estimated retail
    Adidas One Piece Swimsuit (view 2)Adidas One Piece Swimsuit (view 1)New With Tags
    View Product: Adidas One Piece Swimsuit

    Adidas

    One Piece Swimsuit
    Size 30 Plus
    $28.99 $13.05 55% off with code THANKU
    61% off estimated retail
    Swim Solutions Swimsuit Bottoms (view 2)Swim Solutions Swimsuit Bottoms (view 1)Price Drop
    View Product: Swim Solutions Swimsuit Bottoms

    Swim Solutions

    Swimsuit Bottoms
    Size 16
    $28.99 $15.94 45% off with code THANKU
    44% off estimated retail
    PQ Swimsuit Cover Up (view 2)PQ Swimsuit Cover Up (view 1)Price Drop
    View Product: PQ Swimsuit Cover Up

    PQ

    Swimsuit Cover Up
    Size 0X Plus
    $27.99 $18.19 35% off with code THANKU
    75% off estimated retail
    Athleta One Piece Swimsuit (view 2)Athleta One Piece Swimsuit (view 1)Price Drop
    View Product: Athleta One Piece Swimsuit

    Athleta

    One Piece Swimsuit
    Size 30 Plus
    $33.99 $23.79 30% off with code THANKU
    65% off estimated retail
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