Young was physically thrown out of the Directors Guild of America bash Saturday night for heckling "La Vie en Rose" star Marion Cotillard, then insulting Julian Schnabel, director of "The Diving Bell and the Butterfly."

LA gossip site Defamer.com reports Young "began screaming in French" when Cotillard took the stage at the Hyatt Regency Century Plaza to present an award. Young could be heard "breaking into song."

But it was when Schnabel took the stage to make a brief speech "that she really went kook, yelling at him to 'get on with it' and to 'move it on' . . . Julian yelled back at her to 'have another drink, honey' and started to leave the stage before the crowd yelled at him to stay," Defamer reports.

"He continued to talk, and Sean stood up and made a big production of putting on her white fur coat, walking around in a circle and then taking her seat again."

The AP is now reporting Young has checked into rehab to deal with an ongoing addiction problem.