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A large poster advertising the new 'Diana' film has been placed near the spot in Paris where the princess died in a horrific car crash.

The sign shows Naomi Watts in character as the Princess Of Wales next to the Pont de l'Alma.

The 6x4ft poster appeared over the weekend and has sparked outrage among the princess' closest friends.

Rosa Monckton, one of the Princess' most trusted confidantes, said she wanted the poster to be immediately taken down.

'I really don't have any words to describe how I feel about this cynical and shameless attempt to publicise a film that should never have been made," she told MailOnline.

'To have made a film so speculative and as this is disgusting enough, but to then advertise it on the spot at which she died is despicable.

(Image: Handout)

'It is a terrible intrusion into her memory, not to mention the lives of her sons, whose feelings are often forgotten in these stories. "

Princess Diana was killed in the early hours of August 31 1997 as her drunk chauffeur, Henri Paul, tried to outrun paparazzi.

The car she was travelling in with her lover, the Harrods heir Dodi Fayed, crashed inside the tunnel.

The new Diana film opened in Paris this weekend. It has been heavily criticised in Britain by many film reviewers.

The company responsible for marketing the film in France has been unavailable to comment.