Though Princess Diana is no longer here, her confidante, author Andrew Morton, believes she would be devastated to see her sons not getting along.
Morton acknowledged that the late royal, who died in 1997, had never predicted a fight between her sons, but he pointed out that he's familiar with other royal rifts, such as the one between Queen Elizabeth II and her younger sister, Princess Margaret.
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"Elizabeth and Margaret had similar rows but it wasn’t made public," he noted.
The author details the siblings' spats in Elizabeth & Margaret: The Intimate World of the Windsor Sisters.
While speaking with HollywoodLife, he added that he believes Margaret would be very upset with Harry for his interview with Oprah Winfrey.
Morton thinks she would have told him, "Don’t do it. Why have you done it? All you’ve done is hurt the institution and you’ve hurt the monarch."
"She would have given them – as my father would say – a flea in their ear," he added.
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In Harry's talk with Winfrey, he revealed that after leaving the royal family, he and his brother had been on the outs.
"I love William to bits. We’ve been through hell together and we have a shared experience, but we are on different paths," he told the TV personality. "The relationship is 'space' at the moment. And time heals all things, hopefully."
So far, William hasn't said much about the interview, other than stating the royal family is not racist. However, a source spilled to Us Weekly that he may soon break his silence in a bigger way.
"William is struggling to hold back," claimed the source. "He wants to get his side out there."