Bruce Willis and Demi Moore's 20-year-old daughter, Scout LaRue Willis, was arrested Monday afternoon for underage drinking.
Willis, who is a student at Brown University, was caught with an open 8 oz. Pakistani beer in Union Square.
When a police officer asked for identification, Willis handed over a fake ID with the name "Katherine Kelly" before revealing her real identity.
Willis was then cited for misdemeanor criminal impersonation and open container law violation. She was released without bail early Tuesday morning but is due for a court appearance on July 31.
Willis' troubles come just a few months after her mother Demi left rehab following a seizure at home while partying with a group of friends and her oldest daughter, Rumer.