Katherine Victoria Litwack, also known as Kat Dennings, is an American actress. Kat Dennings was born in Pennsylvania, near Philadelphia, to Gerald and Ellen Litwack. She is the youngest of five children. Kat was predominantly home-schooled, graduating at the age of 14. Her family subsequently moved to Los Angeles, California to support Kat acting full-time. (It is not known when, how, or why Katherine Litwack adopted the stage name of Kat Dennings.) After work doing commercials, she began work in television, starting with a role on HBO's Sex And The City (1998), following that up with roles on Raising Dad (2001), The Scream Team (2002), Everwood (2002), Without A Trace (2002), and ER (1994), among others. Kat made the move to the big screen with supporting roles in Raise Your Voice (2004), The 40 Year Old Virgin (2005) and Big Momma's House 2 (2006). She later achieved a level of fame with roles in The House Bunny (2008) and Nick And Norah's Infinite Playlist (2008). Kat continues to act in feature films and is an avid video blogger.