Kristen Stewart Arrives on 'Camp X-Ray' Set in Sweats

Kristen Stewart dresses super comfy in sweats and a sweatshirt as she arrives on a lot for a day of filming Camp X-Ray on Thursday (July 18) in Los Angeles.

The 23-year-old actress has been filming on the water, as she plays a soldier named Cole assigned to Guantanamo Bay.

PHOTOS: Check out the latest pics of Kristen Stewart

The day before, Kristen was spotted in an army uniform before changing out of her costume later in the day and relaxing on a boat with a beer in hand.