A new Diana documentary to mark her 60th birthday

A new documentary about Princess Diana will aim to tell '' the definitive story of the most famous woman in the world'' on her 60th birthday.

The one-off ITV film, entitled Diana will use never heard before testimony and rarely seen archive footage, as well as photos and letters from those who were closer to her to trace her journey from Nursery Assistant to Princess.

The documentary will be produced by 72 Films.

David Glover, the executive producer for 72 Films, said: “There is something a bit magical about Princess Diana, and despite the difficulties in her personal life she managed to use her connection with people to do huge amounts of good.

“Her 60th birthday feels like the perfect time to re-examine her life and legacy and explore just how she went from a relatively unknown teenager to the most mourned person who ever lived.”

Jo Clinton-Davis, controller of factual entertainment for ITV, added: “This year would have been Diana’s 60th birthday, and the intention with this landmark documentary is to offer the definitive account of her life, both in front of the cameras and behind the scenes.

“It is a difficult undertaking to shed new light on the most emotional, dramatic, and pivotal elements of the life of Diana when that light still burns brightly.

“But by delving deep into her relationships with friends, colleagues, and staff, our aim is to provide a vivid portrayal of the woman who became known as the Queen of Hearts.”

Daniela Neumann, of production company Spun Gold TV, said: “Nearly 25 years on from her tragic death, Diana, Princess of Wales continues to lead our news bulletins and conversations not just in Britain but around the world.

“Diana’s Decades takes a fresh approach to recounting her life and legacy by looking at how she was shaped by the changing world around her and as a result transformed not just the monarchy but also society more widely as her legacy.”