Lindsay Lohan could face jail time for violating the terms of her probation.

She has not been showing up for her judge ordered alcohol education classes (evidently!).

These classes were prescribed by a judge last year after Lohan was nabbed on a DUI rap.

Judge Marsha Revel gave the troubled starlet a stern warning. She will be tossed behind bars if she failed to comply with her probation terms.

Lohan had obviously read the terms and conditions of her probation closely. The alcohol-ed school is obligated to inform judge if a student misses 21 days or more.

Cunning, Lohan has managed to get through this loophole by waiting until the 21st day to show up, reported TMZ.

Shawn Chapman Holley, Lohan’s lawyer denies that she has violated her probation.

Though she hasn’t specifically broken any of the terms she’s not exactly following the judges orders either.

All will be revealed at Lohan’s progress hearing the May 20.