Princess Diana tragically passed away on August 31, 1997, leaving behind two young sons, Prince William, who was 15 at the time, and Prince Harry, who was 12.
According to a new documentary on Channel 5 that aired Tuesday night, titled Diana: 7 Days That Shook The Windsors, the royal family acted as normal after Diana's death, deciding to "do as they had always done," which meant attending church at Balmoral, where they were staying at the time.
As it turns out, Harry initially wasn't sure Diana had died, since business at the palace carried on as normal — the next day's church service didn't even mention the royal's passing.
In the documentary, author and royal biographer Tina Brown explained that because of the family's normal behavior, Harry wasn't even sure his mother's death was real.
"Prince Harry actually asked his father 'is it true that mummy's dead?' " E! News reports Brown as saying in the documentary. "The children could not understand why everything was as normal except for being told a couple of hours before their mother had died."
The documentary also alleges that the Queen was so worried that any reference to Diana would be "heartbreaking" for William and Harry, and ordered all TVs and radios to be hidden so they wouldn't hear the details of her death on the news.
This year will mark the 20th anniversary of Diana's death, and both William and Harry have recently opened up about how they dealt with their mother's passing.
"We've never really talked about losing a
"You want to help as much as you can and try and empower them to have that conversation, to be brave enough for themselves to talk about it at a young age rather than bottling it up [like I did] for far too long."
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