This season of “The Hills” is gonna be different since Lauren Conrad left the show, opening up a spot for Kristin Cavallari, who was in the original “Laguna Beach” cast. Compared to Lauren’s demeanor, Kristin is a lot — how do we say this nicely — bitchier. While her personality can be a little caustic, Kristin and her loud mouth will make for some exciting TV. In the clip above, Kristin and a friend shop for a birthday present for Kristin’s ex, Brody Jenner. Watch a longer preview of the upcoming season at People.com.