K-Cav Marks Her Turf: 'You F**ked With The Wrong Girl, Dude!'

Although The Hills' new leading lady, Kristin Cavallari, has been all sortsa noisy about her strategy to stir up trouble next fall, we had no idea that all holy hell would break loose in the first couple of episodes. Watch the trailer below, in which K-Cav swiftly befriends the controversial Stacie the Bartender, more-than-befriends Justin Bobby and then ignites World War III with Audrina, all while looking incredibly pleased with herself.

She wasn't kidding yo ... The bitch is back.