Kardashian works her hips with a hula hoop at an Old Navy event in Los Angeles. Plus: Mary-Kate Olsen, Nicole Richie, Rob Pattinson and more

9 of 16

MAN IN BLACK

Sorry, fan-pires! Twilight hunk Taylor Lautner – who bulked up to play shape-shifting werewolf Jacob Black – keeps his enviable pecs under wraps during a photo shoot Monday in Los Angeles.