Four generations of UK royal family stand all together

Queen Elizabeth II has turned 89 with her official birthday celebration on Saturday. Prince George (middle) in the arms of his father, Willam, the eldest son of Crown Prince, has made his debut on the Buckingham Palace balcony. (From left) Prince Philip, the husband of Queen Elizabeth II, Prince George, Prince William, Kate Middleton, the wife of Prince Willam, Queen Elizabeth II.