Lohan reported to the Century Regional Detention Facility in Lynwood, California, at 8:48 p.m. to begin serving her sentence. She was released at approximately 1:30 a.m.
The "Mean Girls" star had until Nov. 9 to report for her term, which a judge ordered after finding the 25-year-old violated her probation by being terminated from a community service assignment at a women's shelter.
The judge imposed a complicated sentence, telling Lohan that she will now have to perform all of her community service at the county morgue or risk serving an additional 270 days in jail.
It was Lohan's fifth jail sentence since being arrested twice for drunken driving in 2007.