Mar 26, 08 12:20 AM

Kate Bosworth posed for photos outside the "Late Show with David Letterman" studio in New York tonight. She is currently promoting her new film 21, in which she stars with Kevin Spacey and Laurence Fishburne.

21, due in US theaters on March 28, is the fact-based story about six MIT students who were trained to become experts in card counting and subsequently took Vegas casinos for millions in winnings.