Lauren Conrad vs. Heidi Montag on The Hills Lauren LC Conrad and Heidi Montag of "The Hills" wont be sipping tea together at Urth Cafe anytime soon. Tension mounted between the girls when Heidi moved in with her loathsome beau, Spencer Pratt. Next came rumors, rumors and oh, yeah more rumors. Some of them involved a sex tape. Does this sound familiar? Its the exact same argument that allegedly divided former reality stars/BFFs Paris Hilton and Nicole Richie. In an episode of The Hills, LC channels Paris during her feud with Nicole, telling Heidi, You know what you did.