The 23-year-old actress will play Jesse‘s girlfriend Phoebe in the flick.
American Ultra follows an unmotivated stoner named Mike (Eisenberg), who lives with his girlfriend Phoebe (Stewart), in a small, sleepy town. One night, their lives take an unexpected turn when Mike’s past comes back to haunt him, and he becomes the target of a government operation set to wipe him out.
American Ultra is set to begin shooting in April 2014. Previously, Jesse and Kristen worked together on Adventureland.