London, Sept 20 In one of her missing letters to the Queen Mother Princess Diana claimed that Prince Charles had three lovers while they were married.

Diana, who died in a car crash in 1997, named Camilla, Aussie Lady Dale Tryon - known as Kanga - and another high society squeeze in the sensational note, reports The Daily Star.

A source close to the royals said: "Diana was in a lot of pain at the time and wanted to damage Charles.

"She knew he was close to his grandmother and wanted to lash out to hurt him.

"She thought that if someone he really respected knew her claims, they might be able to make him change."

The letter is understood to be one of dozens from Diana to the Queen Mother which were later incinerated by Princess Margaret to protect her mother's memory. (ANI)