Katherine Litwack (born June 13, 1986), known professionally as
Kat Dennings, is an American actress. Starting with a role in an episode of the
HBO dramedy series
Sex and the City, Dennings has since appeared in the films
The 40-Year-Old Virgin,
Big Momma's House 2,
Charlie Bartlett,
Raise Your Voice,
The House Bunny,
Defendor,
Nick and Norah's Infinite Playlist,
Thor, and . Since 2011, she stars alongside
Beth Behrs in the
CBS sitcom
2 Broke Girls.