Princess Diana called out Camilla Parker Bowles at her sister's 40th birthday party after discovering Prince Charles 'had gone back to her'.
The pair had it out as Diana confronted her, telling the now Duchess of Cornwall she knew what was going on at a party held for Lady Annabel Goldsmith in February 1989.
Andrew Morton’s book Diana: Her True Story — In Her Own Words marks the 25 years since her tragic death.
