The new documentary Diana, Our Mother: Her Life and Legacy marks the first time that Princes William and Harry are opening up about Princess Diana with so much depth, including showing never-before seen family photos. "She was really informal and really enjoyed laughter and the fun," says William in the film's preview.
"She was one of the naughtiest parents," echoed Harry, meaning she was never too serious. "But she understood that there was life outside of palace walls," finished William.
There are many fun moments remembered, including when Cindy Crawford, Naomi Campbell and Christy Turlington came to visit. "I was probably a 12- or 13-year-old boy who had posters of them on his wall, and I went bright red and I didn't quite know what to say and sort of fumbled," he recalled. "I think I pretty much fell down the stairs on the way up. I was completely and utterly awestruck."
The brothers recall their final conversation with Princess Diana on the day she died, a call that haunts them both to this day. "Looking back at it now — it's incredibly hard," admits Harry. "I have to deal with that for the rest of my life: not knowing that it was the last time I'd speak to my mum, how differently that conversation would have panned out if I'd had even the slightest inkling that her life was going to be taken that night."
William and Harry have previously been reluctant to discuss their mother in such intimate detail, but executive producer Nick Kent established trust with the Royal Family with his previous documentaries Our Queen and Our Queen at 90. The latter featured the first solo sit-down interview with Kate Middleton.
"Everybody has made their documentary about Princess Diana over the years, but obviously nobody heard that story from the point of view of the two people who really knew her better than anybody else — her sons," Kent told Hollywood Reporter. "We suggested that idea, and a couple of months later, we got a message back that actually Prince William and Prince Harry were open to doing this. We met them to talk about the film, and it was very clear that they really thought this was the right time to show their mother through their eyes."
Produced by ITV in England, Diana, Our Mother airs Monday on HBO. Watch a preview below: