Duchess of Sussex have filmed an interview with the US TV legend, in which "nothing was off limits", according to Oprah's friend Gayle King.
However, royal interviews have a history of not going to plan, most recently Prince Andrew's car crash interview with BBC Newsnight over the Jeffrey Epstein scandal.
In the past, Princess Diana's interview with BBC Panorama shook the world, but she was said to later regret some of the things she said.
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