Here’s Kristen Stewart looking absolutely stunning and dropping everyone’s jaw at last night’s American Ultra premiere thanks to a seriously sexy display of all… and I mean ALL of her sexy little legs and her sexy bare chest in one hell of a skimpy/tiny little dress… lord have mercy! It’s not often we get to see this girl actually showing off some skin and trying to look sexy (or even smiling), but she’s doing just that with this appearance… big time! Hands down one of the sexiest babes on the planet. Well, you know, when she tries. Enjoy the sizzling photos and check out the rest after the jump!