Katherine Litwack (born June 13, 1986 height 5' 3½" (1,61 m)), better known by the stage name Kat Dennings, is an American actress. Emerging 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
, and Thor. She will also co-star in the CBS television series, Two Broke Girls.