Robert Pattinson and Cosmopolis director David Cronenberg celebrated the end of shooting with a party at Charlie's Gallery in Toronto last night. Rob was sporting an LA cap while David was spotted in a plaid shirt. Rob has been hard at work on the film since May, and a recent scene revealed his interesting new haircut. Kristen Stewart visited him on location just last week, though she's since returned to California to practice yoga and prep for her role in Snow White and the Huntsman. Kristen Stewart continued her horseback riding lessons on Wednesday, but the active day was followed by a minor car accident. Kristen's fender bender was apparently caused by another driver rear-ending her Mini Cooper, though the actress had help from a friend with her damaged vehicle.