PARIS, FRANCE - MARCH 17: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge attend a dinner at the British Embassy on March 17, 2017 in Paris, France. The Duke and Duchess are on a two day tour of France. (Photo by Laurent Vu/SC Pool - Corbis/Corbis via Getty Images)

PARIS, FRANCE - MARCH 17:  Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge attend a dinner at the British Embassy on March 17, 2017 in Paris, France. The Duke and Duchess are on a two day tour of France.  (Photo by Laurent Vu/SC Pool - Corbis/Corbis via Getty Images)