Paris Hilton is bustin' out!

The sexy starlet opted for a tight and see-through concoction for a night out in West Hollywood. The celebutante was quick to cover her eyes (but not her cleavage) when she left GQ’s New Z Zegna Collection Celebration, which was hosted by Nick Jonas.

The glittering bash was held at Philymack Studios in West Hollywood. Paris joined Nick Jonas, Joe Jonas, Joel McHale, Chord Overstreet, Ryan Guzman, Bow Wow, Robbie Rogers, Reggie Bush, Jesse McCartney, Kendrick Sampson, Terrence Jenkins, Mayer Hawthorne and Pia Mia.