Olivia appeared in national commercials for "Little Debbie's Snack Cakes" and "Ultra Gain Detergent" at the age of 2.
After being discovered by a talent agent at a beauty pageant when she was six, Alexander began auditioning in Los Angeles without success.
Returning to Los Angeles at the age of thirteen, she eventually appeared in music videos for the Jonas Brothers, Steve Holy, and Jermaine Dupri.
[citation needed] She has played lead roles in Attack of the 50 Foot Cheerleader and 30 Nights of Paranormal Activity With the Devil Inside the Girl With the Dragon Tattoo.
[6] She portrayed Brooke in the horror film Old 37, in which she co-starred Mindy White, Bill Moseley and Kane Hodder.