Ben Affleck Filming Argo Pictures

Ben Affleck was dressed in his own clothes yesterday arriving on the Eagle Rock, CA set of his latest directing project, Argo. He's been spotted on set in recent weeks wearing '70s fashions like bell-bottoms, wide-lapel shirts, and retro jackets, which could even make for a fun throwback Halloween getup. The Garner-Affleck family got a jump on the Fall festivities over the weekend when Violet and Seraphina picked out pumpkins with Ben at a Santa Monica patch. Jennifer Garner's pregnant belly may add a fun element to her costume, or she could keep it covered up like she did in 2008 when Jennifer and Violet dressed as puppies.