Lindsay Lohan -- 30 Days in Jail

Lindsay Lohan has been sentenced to 30 days in jail, and the judge is holding her on a tight leash to make sure she completes her probation.

Lindsay admitted she violated her probation by not attending therapy sessions as required by the court and by getting kicked out of the Downtown Women's Center (click below to read Lindsay's shoddy progress report).

The judge now says ALL of Lindsay's community service must now be served at the L.A. County Morgue. And the judge gave Lindsay a tight structure on how she must complete the rest of her probation, and if she doesn't the judge will put a warrant out for her arrest and sentence her to an additional 270 days in jail.

As for the 30 days Lindsay is getting now -- the judge made it clear ... NO HOUSE ARREST.

The Sheriff's Dept. tells us Lindsay will serve 20% of the 30 days -- 6 days in jail.

Judge Stephanie Sautner gave Lindsay a strict schedule on completing the rest of her probation -- by December 14, she must have completed 12 days at the morgue and 4 psychotherapy sessions. By January 17, another 12 days at morgue and 4 psychotherapy sessions. And so on. Everything must be completed by March 29 -- or she goes directly to jail for 270 days.

The judge clearly thinks Lindsay needs a rigid structure to complete her sentence, and as the judge put it, Lindsay is holding the keys to the jail cell.

And the judge strongly suggested Lindsay stop tweeting about her experiences at the morgue.

At the end, Lindsay seemed happy, walking out of court saying, "Thank God," under her breath.

Sources in the courtroom tell us that when the judge got off the bench she remarked about Lindsay, "She looks good today."