Kate's adorable nickname for Prince Louis: Princess of Wales first used the label last year and was heard applying it again in video announcing the end of her chemotherapy treatment

The Princess of Wales has a sweet nickname for her youngest son, Prince Louis, who is often seen getting up to adorable antics. At the very start of the video Kate, 42, is walking through a woodland area with Prince William, 42, Prince George, 11, Princess Charlotte, nine, and Prince Louis, six. while Louis walks ahead of his family in the recently released video Kate, sitting with Prince George and Prince Louis, announced she had finished her chemotherapy treatment and that 'doing what I can to stay cancer free' was now her main focus Louis shovelling sand into a wheelbarrow during an engagement in Slough last year where Kate called him 'Lou-bugs' Louis walks confidently on ahead of his family and repeatedly throws a ball up to catch while his siblings and parents follow behind. Kate and William smiling with their children in the uplifting video Prince George and Prince Louis tucking into a toasted marshmallow while Kate toasts one in Slough last year Prince Louis, who was five at the time, enthusiastically trying out archery last year Kate used the adorable nickname again later on when the family joined others around a fire to toast marshmallows and make s'mores. Kate has affectionately called her son Louis, 'Lou-bug' and 'poppet' in the past The family strolling through a woodland area in Norfolk during Kate's recent video Prince Louis hugging his father, Prince William, while the family play card games The young prince climbing over logs in the recent video Charlotte's adorable moniker was revealed in a video released by Kensington Palace on Instagram, showing the family-of-five at the Chelsea Flower Show in 2019.