When it comes to The Hills—the MTV reality show launching its sixth season Tuesday, September 29th at 9 p.m.—some things change (L. C. is out; Kristin Cavallari is in), and some things stay the same: Justin Bobby is hot. The show’s bad boy was in town Friday night for a season premiere party at Lumen, where he sipped Absolut and Fuze cocktails until close. Our photographer was on the scene, along with oodles of adoring fans. We’re not sure what prompted Justin’s oh-so-casual over-the-shoulder tie look, but the ladies didn’t seem to mind.