The life of Prince William and Kate Middleton are extremely under wraps; particularly their private lives are untouched by the outside world. So in any case that the two royals reveal something that is particularly private, and only within the family, royal fans would go crazy over it.

Reports have revealed the Duke and Duchess of Cambridge have commented on who the favorite celebrity of their royal kids are. Prince George, 7, Princess Charlotte, 5 and Prince Louis, 2, are said to have one favorite broadcaster and this is revealed to be the great Sir David Attenborough.

In an upcoming documentary by ITV, Prince William: A Planet For Us All, which will be aired on national TV next month, shows Prince William and wife, Kate Middleton meeting Sir David Attenborough.

In the trailer of the documentary, Kate Middleton commented on the meeting, saying that their kids were upset that they will not be able to meet Sir David Attenborough, their favorite celebrity.

Kate Middleton continued by saying that the kids were massive fans of the ‘Blue Planet’ narrator. Prince George predominantly loves David Attenborough and has been watching ‘Blue Planet’ religiously.

The Duchess of Cambridge first met the environmentalist back in 2013 for the premiere of David Attenborough at the Natural History Museum Alive 3D. Form then on the two have met multiple times for engagements.

The ITV documentary will also focus on Prince William’s work with the environmentalist and his take on how much he’s outlook on the environment has changed due to fatherhood.

Prince William commented that he wants to have Prince George, Princess Charlotte and Prince Louis a beautiful breathing home to grow up in.

This will not be Prince William's first project in talking about the environment, the Prince who is following his father’s footstep has also been invited by TED talk in a virtual meeting to talk about saving the planet.

He was joined by numerous other big stars, such as Al Gore, Chris Hemsworth, Jaden Smith and many more. The Prince launched a project, ‘Earthshot’, which focuses on finding innovative ways to save the planet.

The project aims to give funding to five individuals, teams, and organizations every year in a span of five years on their idea.

Prince William revealed that he took inspiration from NASA’s previous project with the moon, launching the ‘Moonshot’ campaign, which saw numerous inventions being created due to the project.