The King's niece Princess Beatrice is pregnant with her second child with her husband Edoardo Mozzi.
Princess Beatrice is ninth in line to the Throne after Prince William, Prince George, Princess Charlotte, Prince Louis, Prince Harry, Archie, Lilibet and her father Prince Andrew.
Their daughter Sienna Mozzi is 10th in line to the Throne so the new baby - the King's great-nephew or great-niece - will be 11th.