In the Amazon documentary William and Harry: Brothers In Arms, royal expert Katie Nicholls reveals how the boys reacted to their mother’s shocking tell-all.
“William was exposed to everything from the interview and called his mother in a fury and a rage,” Katie said.
"[She told me] it was the one time William turned on his mother and said, that he would never forgive Diana for what she’d done.” She added while recalling a conversation with Diana's close friend Simone Simmons.
Twenty years after his mother’s death, Prince William finally said he understood his mother’s reasons to go public.
“I can understand – having sometimes been in those situations, you feel incredibly desperate and it is very unfair that things are being said that are untrue,” he said.
“The easiest thing to do is just to say or go to the media yourself. Open that door. [But] once you’ve opened it you can never close it again.”
The shocking tell all revealed Prince Charles’ affair with Camilla Parker Bowles and was the catalyst for divorce proceedings.
Two years after the interview aired, Princess Diana was killed in a fatal car crash while out with her then lover Dodi al Fayed.