Today Catherine and William joined other royals for the annual Christmas Lunch hosted by Her Majesty at Buckingham Palace. Photographer Mark Stewart tweeted that Prince George was also at the Palace, along with Nanny Maria Theresa Borallo. More from the Daily Mirror's story: The newest addition to the Royal Family was sat in a baby seat in the back of a car driven by his father Prince William, as the young family made their way to Buckingham Palace. With his nanny Maria Theresa Borrallo ...