Dennings made her feature film debut in Hilary Duff's Raise Your Voice in 2004 as Sloane, a somber piano student.

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And, as the world knows, Jones famously had a baby boy, Xander Dane Jones, in September 2011 ...

known professionally as Kat Dennings, is an American actress.

Dennings continued working on television, guest-starring on Without a Trace as a teen whose boyfriend goes missing, and on Less than Perfect in 2003.

In February 2004, she was cast in a pilot for CBS titled Sudbury, about a family of modern-day witches, based on the 1998 film Practical Magic, but the series was not picked up.

In early 2003, Jones reportedly dated Seann William Scott -- wonder how Ashton Kutcher felt about that?

Soon, she moved on to Josh Groban, who she dated until 2006, followed by Tommy Alastra from 2008 to 2009.She played Susan Gardner, Bartlett's love interest, and the daughter of the school's principal (Robert Downey, Jr.).She also starred in the teen romance Nick and Norah's Infinite Playlist, with Michael Cera.Dennings had a recurring role on ER from 2005 to 2006 as Zoe Butler, and guest-starred in the CSI franchise twice: first on CSI itself, as Missy Wilson, in the 2004 episode "Early Rollout".Then, on CSI: NY as Sarah Endecott, in the 2005 episode "Manhattan Manhunt".Jones keeps her private life pretty private, but the actress and former model has been linked to some of the biggest names in Hollywood.