According to Cosmopolitan, Princes William and Harry will appear in three American documentaries, honoring Princess Diana. Years after her death, William and wife have finally found a way to honor the beloved Diana. The royals have recently commissioned three American documentaries to mark the 20th anniversary of their mom’s death. They confirm their appearance in "Diana Vreeland: The Eye has to Travel," "The Conspiracy Files," and "Unlawful Killing." We look forward to these documentaries, and have high expectations.

‘Diana Vreeland: The Eye has to Travel’

The first few episodes of “Diana Vreeland: The Eye has to Travel” were aired in 2011. The documentary is about the life and career of Lady Diana. Vogue says that the project is directed by Lisa Immordino Vreeland, and produced by Bent-Jorgen Perlmutt and Frédéric Tcheng. The new episodes will premiere this winter, and Princes William and Harry would make a brief appearance. The documentary has a total running time of 170 minutes, and can be seen in English, French, Italian and Japanese languages. The project focuses on Diana’s move to New York City, where she launched her fashion house.

‘The Conspiracy Files’

This British-American documentary will premiere on BBC.

So far, two series and thirteen episodes of the program have been aired. In its new episodes, Princes William and Harry would play the lead roles. “The Conspiracy Files” centers around the September 11 attacks, the Pan Am Flight 103 bomb, the Oklahoma City bombing, the 7 July 2005 London bombings, and the death of Diana. There are rumors that the show will be aired this winter, but nothing is confirmed.

We look forward to this short film that is in its final works.

‘Unlawful Killing’

Unlawful Killing” is a British-American documentary film, directed by Keith Allen. The story is about the deaths of Diana and Dodi Fayed on August 31, 1997. Associated-Rediffusion is financing the new version. The documentary is currently in the works, and Prince William will play the lead character.

There’s no information about Harry’s role in this short film. The story is inspired by a book of the same name. It was written on the Princess of Wales' last days. Vogue says that the Duke and Prince Harry have selected several friends and family members to speak about Diana publicly. Through these short films, they're trying to depict their love for the former princess.