Katherine Heigl: Quite the Looker at Letterman

Glamazon Katherine Heigl dons a beautiful Reem Acra dress and a House of Lavande bracelet as she promotes her new romantic comedy The Ugly Truth at Late Show with David Letterman at NYC’s Ed Sullivan Theater on Monday (July 20).

The 30-year-old actress told E! how she feels about her co-star BFF T.R. Knight leaving Grey’s Anatomy: “It’s upsetting. I really miss my friend. He’s that guy for me that I vent to. We talk about character, scenes, and laugh our asses off. I miss him a lot. But he live three minutes from me, so I still see him. [T.R. starring on Broadway] really pisses me off. And no, [it doesn't make me want to do it too.]”

The Ugly Truth, costarring Gerard Butler, opens everywhere this Friday (July 24)!

Below is Katherine in a grey asymmetrical Michael Kors dress (she wore this on Letterman and left in the blue dress for another event).

10+ pictures inside of Katherine Heigl looking like quite the looker at Letterman…