The Duchess of Cambridge was all smiles as she attended the Beating Retreat Ceremony in London on Thursday afternoon. The royal donned a cream coat and nude heels as she stepped out for the military event. The Duchess of Cambridge has certainly been keeping busy this week. In addition to getting all dolled up for the queen's state banquet on Monday, she is set to appear alongside the rest of the royal family for Trooping the Colour on Saturday. In fact, Kate and Prince William's youngest son, Prince Louis, is reportedly making his royal debut at the annual ceremony.