Kristin Cavallari posed for the cameras in her pink bikini while filming episodes for The Hills in Malibu yesterday. On last night's episode Kristin kissed Justin Bobby as she continues to stir up trouble as the new narrator. Heidi and Spencer babysat their new neighbor Enzo, but for now Spencer has kept her desire for kids satisfied with two new puppies instead. There was the usual dose of beauty, fashion, and gadgets on the show, although things feel different with Kristin as the star — and whether or not this is a good thing is still up for debate.