United Kingdom, Nov. 16 -- Catherine, Princess of Wales has urged people to find beauty in "change".

The 43-year-old royal has released the latest video in her Mother Nature series, which celebrates the natural world, to mark the autumn and she makes a rare appearance herself in this short film, enjoying an outdoor cooking session with a group of children.

In the accompanying voiceover, the princess - who underwent cancer treatment last year - talked of finding purpose in "what matters most" and letting go of "what is no longer needed".

She said: "As the days grow shorter and the shadows grow longer, the energy of summer withdraws into autumn.

"This is a season for reflection and refinement. Trees shed their canopies in preparation fo...