Kirsten Dunst was in head-to-toe black Friday for a workout in LA. The actress has apparently been working closely with trainer Tracy Anderson, who's busy sculpting the bodies of none other than Gwyneth Paltrow, Gisele Bundchen, and Nicole Richie — Tracy even works with Kirsten's ex Jake Gyllenhaal. Kirsten's back to her city routine after spending last weekend out in the desert at Coachella. She stayed surrounded by music despite her return, since she and boyfriend Jason Boesel checked out a Paul Simon concert at the Pantages Theater on Wednesday. Kirsten also made a cameo in a new video from the Beastie Boys. Along with other celebs like Amy Poehler, Danny McBride, and Seth Rogen, Kirsten's featured in a short from the Boys called "Fight For Your Right Revisited."