The 25-year-old actress must surrender to the county jail by November 9 after admitting she had violated the terms of her probation in relation to a 2007 DUI (driving under the influence) case, by failing to show up at community service appointments at a women`s shelter in Los Angeles.
Superior Court Judge Stephanie Saunter told Lindsay - who attended the Los Angeles Superior Court Airport branch in a navy polka dot dress and Giuseppe Zanotti high heels -she will now have to perform all of her community service at a morgue and complete 19 psycho-therapy sessions by March 29, 2012.
If she completes them all, her probation will be over and the rest of the sentence will be stayed indefinitely.
If she fails to do so, she will have to serve the remainder of the 270 days of her sentence.
In an unusual twist, she also banned Lindsay from using social networking site twitter while at the morgue.
The sentence is the `Mean Girls` actress` fifth since she was arrested twice for drunk driving in 2007, and earlier this year she served 35 days under house arrest.