Mischa Barton got arrested early Thursday morning for driving under the influence, possession of illegal narcotics and driving without a valid license.

“Her arrest was completed without incident," Deputy Hugo Macias of the L.A. County Sheriff Department tells OK!. "She was very cooperative."

Looks like she won’t be hosting that New Year’s Eve at Cathouse in Las Vegas after all.

UPDATE: according to the Insider Online, Mischa Barton was released from custody earlier today, stay tuned as the story develops.