Since going public with her cancer diagnosis, the mother-of-three has sought comfort from the natural world. In July last year, Kate, who is now in remission from cancer, spoke about the "power of nature" as she helped to launch the Natural History Museum's Urban Nature Project.

Mother's Day arrives a few months early in the UK and the royal family is celebrating accordingly (even the ones that live in California.)

Kate Middleton celebrated Mother’s Day in the UK on Sunday with a heartfelt Instagram post one year after her Photoshop debacle made headlines before she announced she had cancer. The Princess of Wales, 43, shared a video honoring Mother Nature with shots of her touching a tree and walking through a field.