Brad Pitt on the Set of World War Z

Hollywood's A-list was still hard at work after the Fourth of July weekend. Brad Pitt took a break with his kids on the set of World War Z in Malta, while Robert Pattinson had a laugh between scenes for Cosmopolis in Toronto. New York City was teeming with celebrities like Leighton Meester who hit the pavement for Gossip Girl and John Krasinski who worked on a New Era commercial this week — click through to see who else was on set!