Kristin Cavallari and Justin Bobby: PCH Bikers

Continuing work on her new reality television gig, Kristin Cavallari was spotted filming a scene for “The Hills” yesterday afternoon (July 31) in Malibu.  Joined by costar Justin Bobby, the “Laguna Beach” babe looked hot as she prepared to hop on a motorcycle and ride off along the Pacific Coast Highway.  The brand new season of “The Hills” is set for a September 29th launch date at 10pm on MTV, and it sounds like there’s going to be plenty of drama on the way.

And Spencer Pratt gives Miss Kristin the credit for getting the ball rolling way back when. "There wouldn’t be a ‘Hills’ if there wasn’t a Kristin Cavallari, because the ‘Laguna Beach’ brand wouldn’t have had the power. We still love Lauren, we’d love to have you come back on the show. But hey, you were the calm, quiet girl trying to steal Kristin’s boyfriend, the cool girl at the high school. So shout-out to the cool girl joining ‘The Hills’!"

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Photos: Fame Pictures