To mark World Cancer Day, Kensington Palace shared a picture of the Princess of Wales taken by her son Prince Louis. The image showed Kate standing on a tree trunk in a wintry woodland and a frost-covered fern. The message accompanying the images urged people to "nurture all that which lies beyond the disease" and was signed off with a C to indicate it was a message from the princess.
Source: https://www.express.co.uk/news/royal/2009313/prince-louis-photo-princess-kate