If you were alive at the time, you probably remember how sad the whole world became when Princess Diana died. It’s hard to believe that this will mark the 20th anniversary of that fateful day in Paris and, over the years, her sons have been largely silent about their loss – until now.

In a new BBC documentary titled, Diana, Prince William and Prince Harry open up about what it was like to lose some an amazing mother. In the film, William says: “Part of the reason why Harry and I want to do this is because we feel we owe it to her. I think an element of it is feeling like we let her down when we were younger. We couldn’t protect her.”

Harry added: “I think it’s never going to be easy for the two of us to talk about our mother, but 20 years on seems like a good time to remind people of the difference that she made not just to the royal family but also to the world.”

It was August 31, 1997 and Diana was just 36 years old, not much older than her sons are today – William is a 34-year-old father of two and Harry is 32. The boys were just 15 and 12, respectively, when the car crash took her life. 

The documentary will include interviews with friends, journalists, and politicians (along with commentary from the princes) about the days leading up to her much-watched funeral. The outpouring of love and grief from people around the world was absolutely incredible. Of those days, Harry said: “It was beautiful at the same time, and it was amazing. Now, looking back at it, it was amazing that our mother had such a huge effect on so many people.”

He also did a good job of summarizing how such a huge loss can impact a child. He said: “When you’re that young and something like that happens to you, I think it’s lodged in here, there, wherever — in your heart, in your head and it stays there for a very, very long time.”

It has also been announced that the royal family will honor Diana by installing a statue in her likeness on the grounds of her old home in London’s Kensington Palace. It will never come close to replacing her, of course, but, at least, her grandchildren, Prince George and Princess Charlotte, will have that constant reminder of her presence nearby as they grow up.

Very sad. Hopefully, this documentary is both healing and celebratory on this somber occasion.