The youngest Sussex turned one year old on Saturday, at the height of the celebrations for the Queen’s Platinum Jubilee in the United Kingdom. To honor the occasion, the Duke, 37, and the Duchess, 40, posted an adorable photo of Lilibet, which has only been photographed once before. He had previously seen the audience only on a Christmas card created by the Duke and Duchess, in which the couple smiles and plays with Lilibet and her older brother, three-year-old Archie. But the birthday portrait is reminiscent of a royal tradition held by Kate, the Duchess of Cambridge and Prince William for their children’s birthdays, as well as kings of many previous decades. More recently, moving photos of Prince Louis on the fourth birthday of Cambridge’s youngest child were published in April. The prince, wearing a gray jump adorned with stars, smiles and runs with a cricket ball on the beach in Norfolk in charming moments. But there is a key difference between the portraits chosen by Sussex and Cambridges, Professor Pauline MacLaran told Express.co.uk. Professor MacLaran, co-author of “Royal Fever”, said the difference lies precisely in who is behind the camera, capturing these precious early childhood moments captured in portrait form. READ MORE: Prince Harry Updated on Megxit U-Turn – The Company ‘Will Need It Back’ She attended a Lilibet birthday party in Windsor at the weekend. In a separate photo taken by Mr. Harriman and later posted on social media, Megan and Lilibet face the camera next to Harriman’s family. Meghan, 40, and Prince Harry, 37, said they were “incredibly moved by the countless birthday wishes for their daughter” by posting a photo of their daughter smiling at a picnic at Frogmore Cottage. In the photo, Lilibet is smiling wearing a white ribbon, sitting on a piece of grass in a light blue dress. Her ginger hair, which is clearly reminiscent of that of her father, is clearly visible along with a series of new teeth. The photo itself was described as “sincere” and “spontaneous” at the “occasional, intimate” celebration.