"O.C." wanna been Mischa Barton has decided to take a plea bargain in her DUI case -- clever girl that one.A source tells TMZ that at her court date on Thursday she'll plead no contest to the DUI charge. In exchange, the marijuana charge will be dropped and the driving without a license rap will be reduced to an infraction.
Greasy's ex-GF will then have to serve three years of unsupervised probation, attend an alcohol education class and pay a fine.
A source tells us this is "fairly standard" for a first-time offender like Miss Mischa, who was arrested last December, adding that she's "learned her lesson."












