Robert Pattinson had a late one last night on the Toronto set of Cosmopolis. He's in Canada shooting the movie with director David Cronenberg and his costar Sarah Gadon following a weekend in LA with his girlfriend Kristen Stewart and their Twilight castmates. Robert and Kristen picked up the Best Kiss popcorn statuette at the MTV Movie Awards as well as a few other honors, and then retired to the official afterparty to indulge in PDA alongside other famous faces like Reese Witherspoon, Jennifer Aniston, and Justin Theroux. Kristen left California postceremony as well, though instead of going north with Robert, she went east to London. She attended Tuesday's Glamour's Women of the Year Awards to present her On the Road costar Garrett Hedlund with a prize. Kristen then had a night out with Garrett, Sienna Miller, and Tom Sturridge, who she knows well as Rob's best friend.