Kate Beckinsale at Letterman today in a killer, killer dress. Quite possibly the best thing she’s ever worn. Looks like an Herve Leger but am not totally sure.

Still… you put a desperate girl in a gorgeous dress and at the end of the day, all you get is a desperate girl in a gorgeous dress. She wants it so badly it’s almost like all that effort is wafting up around her, spelling TRY-HARD in swirly letters above her head…in sharp contrast to the easy, relaxed style of Charlize Theron who was there the day before.

When I look at Kate Beckinsale, all I want to do is clench my ass cheeks and stop breathing.

Photos from Wenn.com