Nicole Richie is heading back to work. The new mom will guest-star on an episode of the NBC espionage comedy Chuck to air this fall.

“Nicole auditioned for the part and was very funny,” says executive producer Josh Schwartz. “This role is a great opportunity for her to show off her comedic skills and be diabolically evil and kick some butt. It’s going to be really fun.”

Nicole will play a former classmate of Sarah’s (Yvonne Strahovski).