Lindsay Lohan has reportedly checked out of a Utah rehab clinic a month after confessing to drug and alcohol addictions.

The troubled Hollywood actress left the Cirque Lodge Treatment Centre yesterday after spending most of August completing a rehabilitation programme, People reported.

“Lindsay is done,” a source told the US magazine.

“But she may come back for outpatient treatment. She over-extended her stay because she wanted to. She could have been out awhile ago, but she chose to stay.”

The 21-year-old’s mother Diana told People that she was “proud” of her daughter.

“She’s moving ahead with her life,” she said. “Things were getting out of control. She took action. She took responsibility. She really needed to heal.”

Lohan’s father Michael, with whom she was recently reconciled, was photographed leaving the Cirque Lodge with his daughter’s suitcases yesterday.

“Now that she is going out into the world, I can only hope for the best,” he told People.

Lohan, who starred in films such as Freaky Friday, Mean Girls and Bobby, was arrested earlier this summer on suspicion of drunken driving, with Los Angeles police finding a small amount of cocaine on her person.

She later entered a plea bargain admitting her addiction to drugs and alcohol.