At age 16, Fox launched her career after winning several awards at the 1999 American Modeling and Talent Convention in Hilton Head Island, South Carolina.
Fox made her film debut in the 2001 film Holiday in the Sun as the spoiled heiress Brianna Wallace and rival of Alex Stewart (Ashley Olsen). She then landed guest appearances on Ocean Ave., What I Like About You, Two and a Half Men and The Help from 2003 to 2004. In 2004, Fox starred in Confessions of a Teenage Drama Queen alongside Lindsay Lohan. She was later cast in a recurring role on the television series Hope & Faith, in which she portrayed Sydney Shanowski from 2004 through 2006.
