The way Camilla & Charles planned to mock and sully Princess Diana's name, according to new book

Given how the public felt about her, there was plenty of work to do in order to tarnish the much beloved princess.

When Prince Charles and Princess Diana split in the early 1990's, the public were outraged at the way Charles had treated their beloved Diana. Even more hated was Camilla Parker-Bowles, Charles' mistress.

And so the couple quickly set about on a campaign to trash Diana and force the public to accept Camilla, reported New Idea.

Realizing that the public weren't so easily going to accept his mistress after they had fallen so in love with Diana, Charles and Camilla met with PR experts to come up with a plan to make her more likable.

But a new book by Tom Bower, titled Rebel Prince: The Power and Passion and Defiance of Prince Charles, makes explosive statements about that time in the royal household and the disastrous results of the campaign.

Bower claimed in his book that the couple sought to "demythologise Diana by portraying her as a manipulative hysteric." They believed that by targeting Diana's cult following they would be able to rebuild Charles' image and pave the way for Camilla to become queen.

They also chose to cooperate with author Penny Junor, who had an unflattering book about Diana planned.

Among her goals with the book was to portray the People's Princess as an "unbalanced and unfaithful wife, suffering from a borderline personality disorder, who had compelled Charles to return to his true love."

They also planned to make Camilla more appealing to the public by planning a trip for her to New York City in 1999, where the people adored Diana.

But the trip was fated to be a disaster. Robert Higdon, former head of Charles’ charities in the U.S., said of Camilla: "For her to get up in the morning and survive until nightfall is a major effort."

Another unnamed source also shared their opinion on Charles' mistress, calling her the "laziest woman to have been born in England in the 20th century."

Higdon later also confirmed this claim, saying that Camilla hated having to get out of bed in the mornings, and would do her utmost to never have to do anything at all during the day.

Since then, the public opinion managed to mellow enough for the couple to get married in 2005.