Ironically, Princess Diana's reaction to facial hair would be repeated by her granddaughter, Princess Charlotte, decades later. When Prince William debuted his own beard, he admitted that it didn't go down well with his only daughter.

Piers Morgan has threatened to sue Charles Spencer, Princess Diana's brother, over "bulls***" claims in his book 'Swan Song' memoir.

Earl Charles Spencer has claimed that Queen Elizabeth II asked a shocking six-word question after it was revealed Princess Diana had been in a car accident

Spencer also claims in the book that Charles was giddy the morning after Diana's death. However, he said in a recent BBC interview that those were just his feelings at the time, based on Charles' tone. "Feelings, valid as they may be, they do not equate to substantiated fact," Arbiter said.

The decades have not lessened Earl Spencer’s anger over the House of Windsor’s treatment of the former Princess of Wales. King Charles comes in for special vitriol.

Princess Diana expressed doubts over her wedding but was stopped by this close family member, her brother Charles Spencer writes in his memoir.

"The aim of this book is to tell the truth about Diana from her brother's perspective, just as I attempted to do when speaking at her funeral," Spencer explained. "As with my eulogy, I want to speak on Diana's behalf and do so in an openly positive way."

As Earl Spencer’s controversial book about his sister Diana, the late Princess of Wales, is published around the world, the Duchess of Sussex is raising eyebrows for a bizarrely timed product launch.