The two-hour premiere of the painting "Diana, 7 days" will take place on 1 September. The film explores a week that passed since the death of the Princess until her funeral.
William and Harry will talk about his first reaction to the news of the death of Diana, will share personal memories about her mother, about what she meant to them now and then.
The post also participated former British Prime Minister Tony Blair, the brother of the Princess Charles Spencer, her sister Sarah Mccorquodale.
Earlier it was reported that the HBO premiere of the documentary film "Diana, our mother: her life and legacy." The tape was removed by request of princes William and Harry.
It was also reported that Britain's Channel 4 showed a documentary "Diana: in Her own words", which caused the audience mixed reaction.