Prince Louis, with his appearances proving memorable at every occasion. The little four-year-old prince, son of Kate Middleton and Prince William, was seen on Buckingham Palace's balcony on Thursday (June 2) and Sunday (June 5) as well as at the Queen's Platinum Jubilee Pageant. Each moment brought with it something iconic - whether it was his screaming with his hands covering his ears during the RAF flypast, his adorably serious saluting, his cheeky waves, or the hilarious time he put his fingers in his mouth and pulled a face.