You can take 'The Hills' out of Orange County, but you can't take Lauren Conrad out of 'The Hills'. At least not without some pretty big consequences. Season 6 opened sans its blond starlet, who decided to move on after half a decade on the reality show circuit.

After Conrad announced her decision to bail on TV in the hopes of leading a more private life focused on her fashion career, producers brought in Conrad's old schoolmate, Kristin Cavallari, as a replacement. Alongside Speidi, Audrina and the rest of the well-tanned Cali kids, Cavallari reprises the role she stepped into as a teenager on Hills precursor 'Laguna Beach': a flirtatious, manipulative man-eater, all shiny locks and come-hither stares. On 'Laguna' she battled Conrad for the affections of pretty boy Stephen Colletti, and it seems she's up to her old tricks in Hollywood, setting her sights on Audrina Patridge's on-again-off-again, Justin Bobby. But so far Cavallari's episodes have failed to elicit the spark we've come to expect from the drama-filled half hour.