Summer is heating up, but that doesn't necessarily mean it's relaxation time for our favorite stars, who have been hard at work this week. Kristen Stewart wore full military fatigues on the set of Camp X-Ray, while Jenna Dewan got back to work after the birth of her baby girl. Also, Jennifer Aniston filmed from a windowsill on the set of Squirrels to the Nuts — a film which Owen Wilson and Kathryn Hahn were also working on in NYC — and Chris Pine sported a big beard on the set of his new project, Stretch. Check out all the stars who are working through the Summer heat!
