Mischa Barton was charged Tuesday (February 26) with four misdemeanor counts stemming from her December 27 DUI arrest, according to People.

The "O.C." actress was cited for driving under the influence, driving with a blood-alcohol level of .08 or higher, driving without a license and possession of marijuana. Her arraignment is set for Thursday in Beverly Hills Superior Court, according to the site.

According to an arrest report obtained by MTV News, Barton was stopped just before 3 a.m. in West Hollywood, California, after police noticed her car had been weaving back and forth, crossing the traffic line that runs down the middle of North La Cienega Boulevard. Police further noticed the car's driver failed to signal before making a turn.

Barton was taken into custody and transported to the sheriff's West Hollywood station, where she was booked and processed. It was at that time that police learned the 21-year-old actress was an unlicensed driver, and that she was intoxicated, the sheriff's department said. According to Reuters, Barton was also suspected to be in possession of marijuana and an unidentified controlled substance. TMZ reported that the actress blew a .12 on her breathalyzer test, above the California state legal limit of .08, and that she admitted to police that she had smoked pot earlier that day.

The actress was held on $10,000 bail after the arrest and spent about seven hours in jail.

Barton appeared on "The O.C." until the third-season finale. She co-stars in the upcoming movie "Assassination of a High School President" with Reece Thompson, due in April. In 2005, Barton also co-starred in James Blunt's video for "Goodbye My Lover," in which she played the ex-girlfriend of the singer/songwriter.