Amy Winehouse had completed all the legal formalities to ensure that her former husband Blake Fielder-Civil does not get a penny from her fortune following their divorce in 2009.
Her fortune was estimated at 6million pounds in the Sunday Times Rich List of April, but is now said to surpass 10million pounds and growing.
Her acclaimed album Back To Black topped the iTunes chart in 17 countries on Monday, including the UK and the US, and is expected to top the official UK charts this week.
Legal experts said Winehouse’s wealth would be divided among her immediate family, including her mother Janis, who is suffering from multiple sclerosis, father Mitch and older brother Alex.
A source told the Daily Mail on Monday night that Winehouse had put her affairs in order following her tumultuous two-year marriage to Fielder-Civil, 29, who is currently in prison.
She wrote the majority of Back To Black about their stormy romance and the friend said: “Around the time of the divorce, all of Amy’s finances were sorted out – and Blake can’t get his hands on any of it.
“I am pretty sure that Amy does have a will. As a matter of course with record contracts, financial advisors will make sure that is done,” the friend added.
Fielder-Civil was sentenced to 32 months in jail last month for burglary and possession of an imitation firearm.
His mother Georgette said: “He’s devastated and profiting from Amy’s death would be the last thing on his mind.”