LINDSAY LOHAN's father says he fears his daughter will be ‘dead in a year' if she doesn't clean up her act.

MICHAEL LOHAN made the emotional revelation in a n interview in which he also claims his daughter is addicted to prescription painkillers and there is 'nothing left of her'.

In an interview with Grazia magazine, he says: "She needs long-term rehab. I fear the worst. Look at Elvis, Anna Nicole Smith, Heath Ledger - who was a close friend of hers.

"It could be a year, a month, a week - who knows? She has a plethora of medicine you can't mix and can't drink with."

The latest allegations of painkiller addiction come after a difficult few years for the Mean Girls star.

She checked into rehab several times in 2006 and 2007 after being arrested for driving under the influence.

Earlier this month, a Los Angeles judge told the 23-year-old to 'get serious' about attending an alcohol education programme for her probation.