It seems that rehabbed actress Lindsay Lohan has coughed up a staggering seven million dollars on mindless revelry including drugs and booze.

The starlet, who finished her third rehab stint recently, is broke to an extent that she cannot afford her own accommodation and is staying in a rich pal's mansion.

The extravaganza includes one million dollars hotel bill, 137,000 dollars for rehab treatment and thousands of dollars in legal fees for drink-driving convictions.

A source close to Lohan said that the actress is back at LA so that she can recoup the lost amount.

"Lindsay doesn't have much choice as she is totally broke. The only reason she's coming back to LA, is to earn some money fast," mews of the World quoted the source, as saying.

"She still thinks nothing of blowing thousands of dollars on a single night of partying.

"And the amount she has wasted putting cocaine up her nose is disgusting. Even she has lost count,' the source added.

Lohan, who made millions from films like Mean Girls and Confessions of a Teenage Drama Queen, lost all of it in three separate rehab treatments. "Rehab does not come cheap and Lindsay has spent a fortune on it this year. Her first two stays there sadly proved a complete waste of money for her. And I can't see this time being any different," the source said.