London, Oct 5 : `Rehab' singer Amy Winehouse's fortune is said to have diminished from 10 million pounds to just 1 million pounds, all because of her wild lifestyle.

Winehouse, 26, who has not released an album since the hit `Back To Black' three years ago, has managed to squander 9 million pounds from what she had earned last year.

Apparently, her extended holiday on Caribbean isle St Lucia and wild nights out have taken a toll on her account, and documents sent to Companies House reveal that her three firms are now worth 1,067,328 pounds.

The sum is tiny as compared to the 10million pounds the 2008 Sunday Times Rich List estimated.

"Amy's voice has made her a fortune, but her lifestyle costs a lot to maintain," the Daily Star quoted a source as saying.

"There is still cash coming in from royalties. But a new album or tour would really help top up her coffers," the source said.

However, another insider stressed that the singer still made a fortune from Back To Black.

"The firms are not the only place she keeps her money," the insider added.

Winehouse's main firm Cherry Westfield retained over 700,000 pounds of her fortune, while CW Touring held 366,515 pounds and Goal Music ended the year with 656 pounds. (ANI)