Kate Upton Flashes Her Crotch During Marilyn Monroe Moment: See Her Wardrobe Malfunction
Model exposes her front and back during a windy day! See the photos
Her curves catapulted her to fame, so it was no wonder this swimsuit star wanted to show them off on her big night.
Kate Upton painted the town red as she celebrated her birthday two days early in New York on Wednesday night.
The model - who turns 24 on Friday - was as close as one can get to being just her birthday suit legally in public, wearing a thong bodysuit and little else for her celebration.
Flanked by her baseball star beau Justin Verlander as well as her celebrity guests, the star was unmissable as she marked her birthday.
Fashion icon Carine Roitfeld hosted the party for the swimsuit model at the aptly named The Blond lounge.
For her big night, the cover girl picked a very daring party dress which consisted on a sheer black mesh maxi dress with tiny black spots and gold, silver and black sequined stars on it.
While impressively detailed, the stars were not enough to keep Kate's privates private, so she added a bodysuit.
From the front, the blonde's look was revealing but nothing anyone had not seen on the cover of Sport's Illustrated before.
The black high-cut one piece, clung to her famed form and highlighted her ample bust under the high-necked dress.
However at the back, it was a very different story as the bodysuit was a thing leaving her derriere exposed.
Clearly not shy about her risque look, Kate twirled around as she left the venue so photographers could captured her from all her angles.
But it was not just her bodysuit leaving the Other Woman star exposed, as during her partying the actress tore the delicate fabric of the dress.
Right at her thong's edge was a big hole, with smaller tears peppering the rear of the fabric.
Not the Kate seemed to mind, as she could not stop smiling as she posed up with her blue suit-wearing beau.
With her look already demanding so much attention, Kate kept her accessories to a minimum carrying a black envelope clutch and wearing strappy heels.
Kate wore her blonde locks out and flowing with just the smallest hint of a wave for movement.
Also joining in the fun was model Bella Hadid, who stepped out in a Moschino sweater as a dress with thigh high velvet black boots.
Along with the model, Nick Jonas was also at the party, rocking a pair of tight black jeans and a navy coat with leather sleeves.
The singer made sure to pose up inside the event with the girl of the hour, with the model and Nick hitting up the photo booth together.
Perhaps accounting a little for Kate's brave display as she left the party was the fact she and her guests did not hold back at the bar.
Posting to Instagram, the star shared that she had got her birthday wish for lots of tequila thanks to shots of Casa Dragones.
The model turned actress also posted up a picture of her amazing chocolate cake which had giant sparklers instead of candles on it.
Her fiance was also having a blast inside the venue, with Kate sharing SnapChats of the baseball player getting stuck into the food.
Kate and Jason dated first back in 2013 but split only to rekindle their love a year later.
Just last month Kate confirmed they were engaged at the MET Gala, with the model telling E!: 'I'm really excited.
'He asked me right before season started so we've been keeping it on the down low for quite a while. So I'm excited to finally be able to share it with the world!"