Audrina Patridge & Rumer Willis Face a Killer in 'Sorority Row'

ET is with Audrina Patridge, Rumer Willis and the rest of the stars of the fright-night flick 'Sorority Row,' in theaters September 11. Did they all get along famously, or was having a half-dozen beautiful sorority starlets sharing screen time as scary as the film itself?

"I was kind of nervous because I didn't know what to expect especially working with six girls I didn’t know how it was going to be," Audrina says. "And especially coming from a reality show, but doing those scenes after meeting all the girls, I felt really comfortable. They really helped me, and we all worked together."

Briana Evigan, Leah Pipes, Jamie Chung, Rumer and Audrina play five friends whose college prank goes too far, resulting in the death of their sorority sister. Making a pact to never speak of it again, the girls learn that they can't sweep the past under the rug when a mysterious killer goes after anyone who knows their deadly secret.