Bella Hadid flaunts her underwear under sheer Dior gown

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Bella Hadid left little to the imagination when she stepped out on Tuesday night in a sheer gown that showed off her undergarments.

The 20-year-old model attended Dior's book launch in New York City in a chic, see-through Dior dress adorned with black polkadots. Underneath, Hadid rocked white boxer briefs and a matching white bra with "CHRISTIAN DIOR" written on it.

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Hadid finished off the look with some high-fashion bangs and a top-bun.

See Bella Hadid's sexy Dior look:

6 PHOTOS
Bella Hadid attends Dior book launch
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Bella Hadid attends Dior book launch
NEW YORK, NY - OCTOBER 25: Model Bella Hadid attends Dior Beauty celebrates The Art of Color with Peter Philips on October 25, 2016 in New York City. (Photo by Nicholas Hunt/Getty Images for Dior Beauty)
NEW YORK, NY - OCTOBER 25: Model Bella Hadid attends Dior Beauty celebrates The Art of Color with Peter Philips on October 25, 2016 in New York City. (Photo by Nicholas Hunt/Getty Images for Dior Beauty)
NEW YORK, NY - OCTOBER 25: Make-up artist Peter Philips and model Bella Hadid attend Dior Beauty celebrates The Art of Color with Peter Philips on October 25, 2016 in New York City. (Photo by Nicholas Hunt/Getty Images for Dior Beauty)
NEW YORK, NY - OCTOBER 25: Models Jasmine Sanders and Bella Hadid attend Dior Beauty celebrates The Art of Color with Peter Philips on October 25, 2016 in New York City. (Photo by Nicholas Hunt/Getty Images for Dior Beauty)
NEW YORK, NY - OCTOBER 25: (L-R) Renaud de Lesquen, Bella Hadid and Serge Brunschwig attend Dior Beauty celebrates The Art of Color with Peter Philips on October 25, 2016 in New York City. (Photo by Nicholas Hunt/Getty Images for Dior Beauty)
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Earlier on Tuesday, the model, who's dating singer The Weeknd, attended the callbacks for the Victoria's Secret Fashion Show. News broke on Tuesday that the model would be walking in the famed show, which will take place in Paris, for the first time this year. Her older sister, Gigi, walked in the show last year.

See more of Bella Hadid's sexiest looks of 2016:

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Bella Hadid's sexiest Instagrams of 2016
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Bella Hadid's sexiest Instagrams of 2016
Morning!!! Getting excited for Paris!!!!! @victoriassecret β€οΈπŸ‘ πŸ‘™βœˆοΈπŸ—Ό Lets go!!!!!! πŸ’₯❀️🀘🏼πŸ’₯ #vsfs2016 πŸ˜…β€οΈβœ¨
πŸŽ€πŸ’˜πŸŽ€
Backstage by @jeromeduran πŸ’—
I can't believe it! πŸ’˜πŸ’˜πŸ’˜ I was smiling SO HUGE on the inside I promise!!!! The most fun and nerve racking experience of my life but I wish I could do it over and over and over again!!!!! πŸŽ€πŸŽ€Thank you @theweeknd for being the best and most incredible performer on the planet. You KILLED it, as always 😍 ❀️ And not enough thank you's to @ed_razek @10magazine @johndavidpfeiffer @monica.mitro and the whole VS family!!!πŸ’•πŸ™πŸΌπŸ’—πŸŽ€thank you for believing in me I love you all so so so much πŸ’—πŸ’—πŸ’—πŸ’—
Had to get my workout in this morning at @gothamgym before πŸ—πŸ–πŸ΄πŸŒ½πŸ§€ πŸ™πŸΌπŸ™πŸΌπŸ™πŸΌhappy thanksgiving everyone...β€οΈπŸ™πŸΌπŸ˜‡πŸ’•
@nike behind the πŸ“ΈπŸ“½ by my Luv @renellaice
🎱
πŸ‡«πŸ‡·
Wearing all @Dior of course🌸 #DiorTheArtOfColor
Crazy.... And next to the legend Henry Rollins... Thank you @calvinklein πŸ™πŸΌ
❀️
❀️THANK YOU @MARIOTESTINO SUCH A DREAM OF MINE!!!!! XO❀️
W magazine shot by the amazing @venetialscott and styled by my incredible @edward_enninful I love you ❀️#love @wmag
@flaremag cover in @calvinklein by the amazing amazing amazing @ninomunoz and @isabeldupre πŸ’πŸ’Thank you ✨
@ninomunoz
My favorite red lip #RougeDior ! @DiorMakeup πŸ’„πŸ’‹πŸŒΉ @peterphilipsmakeup
just made my whole week ...😩Thank you for the congratulations my 2nd family @jessejostark @mattyboy90 @laurielynnstark @richardstarkchromehearts I love you ❀️🏹🍾
Thank you everyone at @britishgq , @imgmodels my mom/dad, and all of you crazy cool people out there supporting me
off time- outtake @voguemagazine by @seanthomas_photo
🌹🌹#Freeingthenipple for our French Vogue cover with my brothers @mertalas & @macpiggott Thank you for opening my eyes to a new art form I love You! Thank you for the opportunity and experience @emmanuellealt @vogueparis and everyone for your support #LoveYourBody 🌹🌹
A shot from my @vogueparis cover shoot by my brothers @mertalas and @macpiggott and the great @emmanuellealt πŸŒŸπŸ’ŽπŸŒŸ
at your service :)
baby
My cool creative handsome smart loving happy beautiful brother best friend @anwarhadid
All hands on deck @jessejostark βš“οΈπŸ›³
πŸ¦πŸ’¦
β˜€οΈ
Betty blue πŸ’™
Island Bels
Paradise
#mycalvins
After @versace_official showπŸ’„by my sweetest @elizabethsulcer ❀️
Thank you @modelsdot for ranking me on the Top 5O list with so many amazing women and men! 'The Graduates' Shot by the great @sebkimstudio and styled by Vanessa Chow. Read about it on models.com ❀️
Shot from my @lofficielrussia cover by @danilgolovkin πŸ’™
Today in LondonπŸ€˜πŸ»πŸŒ·πŸ’— @sammcknight1 @thevalgarland Two brilliant minds! Love u both!
finished shooting & we got to jump in the water!!! Thank you @anna_dello_russo & @giampaolosgura πŸ’™πŸ’™πŸ’™BEST day and best location !!! @voguejapan
mornings with @makeupvincent & @jenatkinhair
Back in Cannes!πŸ‡«πŸ‡·πŸ‡«πŸ‡·πŸ‡«πŸ‡· Off to @degrisogono in my @givenchyofficial 🌟 Zombie patrol: @jenatkinhair @makeupvincent πŸ’‚πŸΌ
@elizabethsulcer I Love You Majorness.
#1 fan
How long til this chick is ready?..!!@jessejostark by @thecobrasnake 🎀🎀🎀🎀🎀
πŸ’₯πŸ’₯Sorry mama πŸ˜‡ Secret project with my dream team @nomadrj and @elizabethsulcer πŸ˜»πŸ˜»πŸ˜ˆπŸ˜‡πŸ˜‡ #BTS
When bae says ur cute
By @txemayeste in Paris @harpersbazaares
By @txemayeste for @harpersbazaares 🐝
Detailzzzzzz ⭐️ @makeupvincent @michaelsilvahair @versace_official @monicarosestyle ⭐️
Love @AlexandreVauthier Couture ✨
Today..coming soon :)
Go to the gym so you can eat a whole pizza to yourself tonight @cullysmoller true story
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