I've played every instrument you could possibly think of for 10 minutes. So I'm mediocre at everything. I can play drums, guitar, piano, violin, saxophone, clarinet, flute... Just not well.

Dennings stated to The Jewish Journal of Greater Los Angeles that Judaism "is an important part of my history but as a whole religion is not a part of my life". Litwack. As of November 2011[update] Kat Dennings lives in an apartment in Los Angeles's San Fernando Valley.

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 also co-stars in the CBS television series 2 Broke Girls.