The decision to place a poster advertising the film 'Diana' close to the spot in Paris where the princess died in 1997 has caused outrage among those who knew her.
The poster, which has been placed next to the Pont de l'Alma ahead of the film's release in France, has been described as "despicable and crass" by Rosa Monckton, who was considered one of the Princess' most trusted confidants.
Speaking to the MailOnline, she said: "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.
"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.
"I cannot imagine that any company could stoop so low. It is a terrible intrusion into her memory, not to mention the lives of her sons, whose feelings are often forgotten in these stories. I would expect them to take it down right now."
The film which charts the Princess of Wales' romance with a heart surgeon was released in the UK earlier this month.