Princess Beatrice's step-son made his royal debut as he joined Prince George, Princess Charlotte, Prince Louis and the rest of the Queen's family for the People's Jubilee Pageant.
Christopher Woolf, known as Wolfie, is the son of Bea's millionaire husband Edoardo Mapelli Mozzi and his ex Dara Huang.
The couple largely keep him out of the royal spotlight, however decided to bring him to London for Sunday's Jubilee celebrations.