[All photos by ANDREAS BRANCH for PMc].

It's Rumer Willis' big screen premiere, aren't you excited? Mama Demi Moore sure is. She made it out to support her eldest daughter at the premiere of Sorority Row in Los Angeles last night. Also there was Audrina Patridge, Carrie Fisher, Cisco Adler, and a slew of young stars from the movie. Curious as to what type of film this is? Well, as if the title didn't give it away, the fact that IMDB lists characters such as "Bra-Clad Sister" and "Already Drunk Sister" should give you an idea of why this film is premiering in LA and not Venice this week.