Demi -- sporting dark nail polish, dark lipstick, dark clothing ... and a leopard-print jacket -- hit a place in Illinois called Hollywood Blvd -- a movie theater with "full to-your-seat food and beverage service."
As we previously reported, Demi's treatment center granted the singer an Xmas Day pass to hang out with her kinfolk outside the facility -- but she was required to return to the center a few hours later.
No word on which flick the singer and her family chose to see ... we're guessing it wasn't "The Fighter."
