Patridge was born in 1985 in Los Angeles, California and was raised in Yorba Linda in Orange County. She has 2 sisters, Casey and Samantha, who appeared briefly on The Hills. She aspired to become an actress and model at a young age.

Patridge has appeared in seasons one, two and three of reality television show The Hills featuring Whitney Port, Heidi Montag and former Laguna Beach star Lauren Conrad.

Throughout season one of The Hills, Patridge worked as a receptionist at Quixote Studios (a photo studio) in Los Angeles.

In 2006, prior to filming the second season of The Hills, Patridge began a new job at Epic Records.[6] Patridge moved in with Conrad in the spring of 2007, taking over Montag's role on The Hills as best friend and roommate to Conrad.

As of the end of season 3, Audrina and Justin Bobby are no longer dating. She was last seen on screen dating an Australian named Corey.

--Wikipedia