Lindsay Lohan is going to jail for 90 days.
A Beverly Hills judge found Lohan violated probation on two DUI cases and sent the "Mean Girls" star away after a day-long hearing that left the actress in tears.
"She comes and goes as she pleases," said irate Superior Court Judge Marsha Revel. "There's been a history of that. No excuses."
Lohan was ordered to surrender on the morning of July 20.
The stiff sentence came after a weepy Lohan - breaking down at times - made an emotional pitch to stay out of jail.
"I'm not taking this as a joke," Lohan said through tears. "It's my life, it's my career."
When Revel handed down the sentence - three times what prosecutors sought on the probation violation - Lohan wept on her lawyer's shoulder.
Lohan missed seven scheduled alcohol education sessions between December 2009 and Monday, according to witness Cheryl Marshall, co-owner of the Right On facility.
Lohan's excuses for skipping her sessions ran the gamut from no flights at a North Carolina airport to promoting a clothing line to the death of her uncle (although she did not attend his funeral).
She had previously missed eight sessions, leading to a pointed letter sent to Lohan's lawyer last August.
"Her excuses are endless and disrespectful," wrote John Marshall, who runs Right On with his daughter.
Revel had ordered Lohan to attend weekly alcohol education classes - or face possible jail time for violating her probation.
Lohan, 24, wore a black top, black pants and sunglasses when she arrived at court early for a hearing that could end up with her in jail.
Revel - who ordered Lohan to wear a SCRAM bracelet in May - said she would not throw the onetime Disney star behind bars because of a positive reading for alcohol.
Lohan tested negative for booze hours after the June 7 reading of .03 on the bracelet - less than two drinks.
Prosecutor Danette Meyers had argued that the reading was a probation violation, and encouraged the judge to take a hard line against Lohan.
"She clearly violated your order," Meyers argued before the judge spared Lohan. "It makes no sense to have it there if you're not going to abide by it, and there's no sanction."
Lohan was nearly thrown in jail two months ago when she blew off a Los Angeles court appearance and was spotted hanging out aboard a yacht in the French Riviera.
Revel was so infuriated that she instead revoked LiLo's probation and ordered the former child star to post $100,000 bail to avoid 180 days behind bars.
She also ordered the hard-partying starlet to wear the alcohol-detecting ankle bracelet despite Lohan's concerns that it could affect her career.
The case stems from a pair of 2007 DUI arrests, including one where Lohan drunkenly crashed her car into a Beverly Hills tree.
She wound up spending 84 minutes in jail, and was placed on probation - which Revel extended for a year last October because of Lohan's failure to comply.