Kate Upton flashes her butt in sheer dress during 24th birthday bash -- see the cheeky style

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Kate Upton Flashes Her Booty at Birthday Celebration -- See the Revealing Dress!

Kate Upton didn't quite step out in her birthday suit -- but she came close.

The supermodel had an early birthday celebration at The Blond at 11 Howard Hotel in New York City on Wednesday night, ahead of her turning 24 on Friday. Upton bared her butt in a thong bodysuit that she wore under a sheer, star-embellished dress. While posing with her fiance, 33-year-old MLB pro Justin Verlander, the Sports Illustrated Swimsuit cover girl got cheeky with photographers and flashed her bum.

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Kate Upton bares her butt at 24th birthday party
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Kate Upton flashes her butt in sheer dress during 24th birthday bash -- see the cheeky style
NEW YORK, NY - JUNE 08: Kate Upton celebrates her birthday at The Blond at 11 Howard Hotel on June 8, 2016 in New York City. (Photo by James Devaney/WireImage)
NEW YORK, NY - JUNE 08: Kate Upton celebrates her birthday at The Blond at 11 Howard Hotel on June 8, 2016 in New York City. (Photo by James Devaney/WireImage)
NEW YORK, NY - JUNE 08: Justin Verlander and Kate Upton celebrate her birthday at The Blond at 11 Howard Hotel on June 8, 2016 in New York City. (Photo by James Devaney/WireImage)
NEW YORK, NY - JUNE 08: Justin Verlander and Kate Upton celebrate her birthday at The Blond at 11 Howard Hotel on June 8, 2016 in New York City. (Photo by James Devaney/WireImage)
NEW YORK, NY - JUNE 08: Model Kate Upton attends Carine Roitfeld hosts birthday party for Kate Upton at The Blond at 11 Howard Hotel on June 8, 2016 in New York City. (Photo by Michael Stewart/Getty Images)
NEW YORK, NY - JUNE 08: Baseball player Justin Verlander (L) and model Kate Upton attend Carine Roitfeld hosts birthday party for Kate Upton at The Blond at 11 Howard Hotel on June 8, 2016 in New York City. (Photo by Michael Stewart/Getty Images)
NEW YORK, NY - JUNE 08: Baseball player Justin Verlander (L) and model Kate Upton attend Carine Roitfeld hosts birthday party for Kate Upton at The Blond at 11 Howard Hotel on June 8, 2016 in New York City. (Photo by Michael Stewart/Getty Images)
NEW YORK, NY - JUNE 08: Justin Verlander and Kate Upton celebrate her birthday at The Blond at 11 Howard Hotel on June 8, 2016 in New York City. (Photo by James Devaney/WireImage)
NEW YORK, NY - JUNE 08: Baseball player Justin Verlander (L) and model Kate Upton attend Carine Roitfeld hosts birthday party for Kate Upton at The Blond at 11 Howard Hotel on June 8, 2016 in New York City. (Photo by Michael Stewart/Getty Images)
NEW YORK, NY - JUNE 08: Kate Upton celebrates her birthday at The Blond at 11 Howard Hotel on June 8, 2016 in New York City. (Photo by James Devaney/WireImage)
NEW YORK, NY - JUNE 08: Justin Verlander and Kate Upton celebrate her birthday at The Blond at 11 Howard Hotel on June 8, 2016 in New York City. (Photo by James Devaney/WireImage)
NEW YORK, NY - JUNE 08: Kate Upton celebrates her birthday at The Blond at 11 Howard Hotel on June 8, 2016 in New York City. (Photo by James Devaney/WireImage)
NEW YORK, NY - JUNE 08: Kate Upton celebrates her birthday at The Blond at 11 Howard Hotel on June 8, 2016 in New York City. (Photo by James Devaney/WireImage)
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Bella Hadid and Nick Jonas also attended the birthday celebration, which included cake and tequila shots. "I'm so happy to have my friends and family with me today!" she posted to Instagram.

All I want for my birthday! #birthdayparty #laesquina #casadragones #carinexkate

A photo posted by Kate Upton (@kateupton) on

Happy birthday Kate! @kateupton

A photo posted by Nick Jonas (@nickjonas) on

Upton has lots to celebrate this year! Last month, ET confirmed that the model got engaged to Verlander just as she was flashing her engagement ring on the Met Gala red carpet.

WATCH: Kate Upton 'Horrified' When Terry Richardson Released 'Cat Daddy' Video

Upton meeting her man while filming a commercial for MLB 2K12, the two reportedly started dating on-and-off for three years. "We're really happy right now and just continuing being happy," she told ET in January.

Check out her ring!

Kate Upton Shows Off Her Huge Engagement Ring From Justin Verlander at The Met Gala

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