LOS ANGELES, Calif. --
Mischa Barton is planning to accept a plea deal in her December 2007 DUI case, People reported.
Barton is expected to plead no contest when she is arraigned this Thursday in Beverly Hills, Calif., a source told People.
She is expected to serve probation for three years, unsupervised, the source said.
Like several starlets before her, Barton is expected to receive a sentence, which includes a three-month alcohol abuse education class, and the charge of marijuana possession against the star will be dropped. A charge of driving without a license will be lowered to an infraction.