A CONTROVERSIAL book about Princess Diana has sparked a multi-million pound bidding war between Hollywood movie moguls.

And stunning Pirates Of The Caribbean star Keira Knightley is already being wooed to play Di.

They hope the film will rake in millions at the box office following the huge success of The Queen, which netted Helen Mirren an Oscar this year.

It will be based on the book Diana And The Paparazzi, which tells the extraordinary story of the Princess of Wales, who died aged 36 in a car crash in Paris in 1997