It's no secret Kristin Cavallari planned to shake things up in Hills country. But we had no clue that meant sucking face with Justin Bobby, ripping on Brody Jenner and challenging Stephanie Pratt to a Celebrity Deathmatch. Meanwhile, Heidi Pratt's got baby fever, Holly Montag's got a (possible) drinking problem and Audrina Patridge has got MAJOR friction with the new girl. Get a sneak peek of K-Cav's reign of terror official series debut, and catch new episodes of The Hills starting Tuesday, September 29th at 10pm. You're not in LC country anymore ...