Robert Pattinson  had a stern look on his face as he got down to filming, but lightened up and was spotted laughing between takes on the set of Cosmopolis in Toronto last night. He was logging in another late night making the intense drama, though as usual Robert made time to greet fans who anxiously waited for a glimpse of the star. Robert took on an intense shoot-out scene  last week, showing the unraveling of his character as the movie, which takes place in the course of one day, progresses. While Robert is getting into character as an unstable billionaire, his girl Kristen is taking on her own new challenges for a role. Kristen Stewart was spotted horseback riding  over the Fourth of July weekend in preparation for her part in Snow White and the Huntsman.