Pucker up, boys! In less than a month, Audrina Patridge is going from reality TV star to scream queen. And as part of her hard-partying sorority girl M.O. ('Drina plays Theta Pi sister Megan in the horror flick Sorority Row), she'll be locking lips with her female costar, Leah Pipes. (Yeah, somehow we're thinking 'Drina's new beau, Corey Bohan, won't mind.)

Anyhow, catch this sneak peek from the film (courtesy of E! Online) and be sure to check it out in theaters on September 11. Oh, and be warned: looks like Audrina's kissing her good-girl image goodbye ...

+Bonus: Did we mention Audrina's character dies a horrible death? Get a first look at the Sorority Row trailer!

Credit: MTV Remote Control