While model Kate Upton is known for baring her assets, it was her butt not her boobs that stole the show on Wednesday night!

The almost 24-year-old hit the town with fiancé Justin Verlander for a star-studded birthday bash that included Nick Jonas and Bella Hadid.

Not only did her thong leotard (which was covered by a sheer overlay) command attention, but a noticeable rip in the booty area managed to draw even more eyes — though she didn't seem to mind!

Scroll through the gallery to see more celebs who've intentionally exposed their backsides for the camera!