I can rock out anything. I mean, I can rock out a little 'Time After Time'. I can do a little 'Grease Lightning'. It depends on the mood, but we do go karaoke, my friends and I in Los Angeles, and it's a lot of fun.

Bell often attends fund raisers for the ASPCA and other non-profit organizations dedicated to protecting animals. She co-starred with singers Christina Aguilera and Cher in the film musical Burlesque which was released on Thanksgiving in 2010. In 2001 during her senior year at New York University Bell left a few credits shy of graduating to take a role in the Broadway musical version of The Adventures of Tom Sawyer.

In 2001 Kristen Bell made her Broadway debut as Becky Thatcher in The Adventures of Tom Sawyer. Bell was also the voice of Cora in Astro Boy and is the voice and face of Lucy Stillman in the Assassin's Creed video game series. She also portrayed the lead role in Pulse a remake of a J-Horror film.