Switching up her 'do for her new movie, Kristen Stewart sported red hair on the set of "American Ultra" in Louisiana on Tuesday (April 15).

Walking around a sugar refinery outside of New Orleans, the "Twilight" star wore a red plaid jacket over a white sweater and black skirt.

In the upcoming comedy, a stoner and his girlfriend's sleepy, small-town existence is disrupted when his past comes back to haunt him in the form of a government operation set to wipe him out.

Directed by Nima Nourizadeh, the movie also stars Jesse Eisenberg, John Leguizamo, and Topher Grace.