The actress, 24, checked out of UCLA's Neuropsychiatric Hospital on Tuesday after just over three weeks, a source confirms. The judge had originally ordered Lohan to three months of in-patient treatment as part of her sentence for violating probation in a DUI case.
"She's out and doing really well," the source tells PEOPLE.
Due to overcrowding and good behavior, Lohan's jail term also had been cut short to 13 days instead of the three months ordered by the judge.
A hearing is set for Wednesday morning at a Beverly Hills courthouse before a new judge, Elden Fox, who may order additional out-patient care.
A source close to Lohan says the actress currently "has strict outpatient rules" now that she's out of the treatment facility.
As of now, Lohan also is subject to random drug and alcohol testing until the end of her probation term in August 2011, but those conditions could change at the hearing.
RadarOnline was first to report her release from rehab.
Five Things to Know About the New Miss Universe
Meet overnight sensation Jimena Navarrete. Less than 24 hours after she was crowned Miss Universe, Mexico's Navarrete has become a top trending topic on Twitter and thousands of fans have flooded her Facebook fan page.
So who is the woman who ousted 82 other competitors for international beauty bragging rights? Here are five things to know about the 22-year-old from Guadalajara.
1. She knows how to handle tough questions
After Monday's pageant in Las Vegas, Navarrete was asked her opinion about Arizona's recent immigration law and she strategically answered without alienating either side. "Every country has the right to impose and enact their laws," she said. "But I tell you that all the Mexicans and the Latins that are living here in the United States are hardworking people – people who want to improve on their quality of life."
2. She's been modeling since she was a teen
Since the age of 15, the 5-foot-8-inch Navarrete, a self-described nature enthusiast who enjoys boating and motorcycles, has been working in the modeling world with gigs that include working the runway at fashion shows. Most recently she walked at Mexico Fashion Week 2009 for designer Macario Jimenez.
3. She loves her sash. A lot.
During her reign as Miss Universe, she hopes to bring attention to people with HIV/AIDS and breast cancer – but she also plans to let "the whole world to know about my country and my people," she said after the competition. Her most prized possession? Her sash because it "has Mexico's name. I'm very proud to be representing my country and it's a big honor for me," she previously said.
4. Also on the agenda: Boosting body image
"I studied nutrition and I would like everyone to understand that it is not about your looks it is how you feel inside," the brunette, who is only the second Mexican woman to win the Miss Universe title, said through an interpreter. "And when you feel good inside you look good."
5. She likes sensitive men – and already found hers
"The advice that I can give to all the men in the world, it would be to be more sensitive, more lovely or to express in an easy way [what] you're feeling," she said during a pre-pageant interview with the Miss Universe organization. Navarrete seems to have found that in her boyfriend of four years, Pablo Nieto.
Allies insist Thaksin is healthy and his Mandela pics not faked
Former prime minister Thaksin Shinawatra is still healthy but he keeps quiet as does not want to be linked with political issues, people close to him said yesterday
Thaksin's brother-in-law Somchai Wongsawat - also a former prime minister - said Thaksin had greeted him by telephone on Sunday. Thaksin was not somewhere near Thailand and he was healthy.
"Thaksin has no signs of illness. His voice is still clear and he is healthy. If he were really sick, the Shinawatra family would have no reason to conceal it. If Thaksin has some sickness, it must be [emotional], as he misses his home and his kids. Although Khunying Pojaman Na Pombejra is his ex-wife, he still misses her," Somchai said.
Meanwhile, Thaksin's close aide Noppadon Pattama assured a press conference that Thaksin was still alive. He showed two photographs of Thaksin, one with Nelson Mandela and the other with the Nobel Peace Prize laureate's second wife Winnie Madikizela-Mandela. The date on the second picture was shown as August 27, 2010.
Noppadon insisted the pictures were taken recently, without photo-editing.
He said Thaksin went to see Mandela for peace discussions, as he travels to meet many national leaders and to seek business opportunities.
Somchai said Thaksin was well aware of the media reports that he keeps quiet because of illness. Some people might want him to be sick, he said.
"I've never heard Thaksin say he would come back to power. He has concern for the people and sometimes wants to communicate with them. I understand that no matter whether a celebrity speaks or keeps silent, it's still news," Somchai said.
Somchai said Thaksin had kept quiet lately as he had seen too much chaos in the country and did not want anyone to link him to political issues.
Somchai was speaking yesterday while Justice Ministry officials, police officers and Pheu Thai MPs greeted him at home on his 63rd birthday.
Asked whether he thought the Shinawatras should fade away, reducing their roles in the Pheu Thai Party, Somchai said the party belonged to everyone, not just the Shinawatras. Only a few family members remained in the party.
Pheu Thai leader Yongyuth Wichaidit has worked for the party since it was the People Power Party, Somchai said. He could be considered a real leader who administered the party well all along. The only problem was that Yongyuth was not an MP. However, the restructuring of the Pheu Thai Party could take place at any time, Somchai said.
Asked whether Pheu Thai's candidate for prime minister should be the party leader or an MP, Somchai said it should be whoever most carried the faith of the people.
He also said it was important for a political party to try to win people's trust and bring them hope.

