TROUBLED LINDSAY LOHAN wept as she was sentenced to 90 days in jail last night.

The Mean Girls star, 24, violated her probation for a 2007 drink-driving charge by repeatedly missing alcohol education classes.She insisted she did not realise she was breaking the order and that her work schedule had stopped her attending regularly.

I have tried to do the best I can. I really did think I was doing what I was supposed to do, and I mean it with all my heart

Shocked ... Lindsay at the hearing