PARIS, FRANCE - MARCH 17: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge meet with President Francois Hollande at The Elysee Palace on March 17, 2017 in Paris, France. The Duke and Duchess are on a two day tour of France. (Photo by Samir Hussein/Samir Hussein/WireImage)

PARIS, FRANCE - MARCH 17:  Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge meet with President Francois Hollande at The Elysee Palace on March 17, 2017 in Paris, France. The Duke and Duchess are on a two day tour of France.  (Photo by Samir Hussein/Samir Hussein/WireImage)

PARIS, FRANCE - MARCH 17: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge meet with President Francois Hollande at The Elysee Palace on March 17, 2017 in Paris, France. The Duke and Duchess are on a two day tour of France. (Photo by Samir Hussein/Samir Hussein/WireImage)

PARIS, FRANCE - MARCH 17:  Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge meet with President Francois Hollande at The Elysee Palace on March 17, 2017 in Paris, France. The Duke and Duchess are on a two day tour of France.  (Photo by Samir Hussein/Samir Hussein/WireImage)

PARIS, FRANCE - MARCH 17: Catherine, Duchess of Cambridge visits The Elysee Palace on March 17, 2017 in Paris, France. The Duke and Duchess are on a two day tour of France. (Photo by Samir Hussein/Samir Hussein/WireImage)

PARIS, FRANCE - MARCH 17:  Catherine, Duchess of Cambridge visits The Elysee Palace on March 17, 2017 in Paris, France. The Duke and Duchess are on a two day tour of France.  (Photo by Samir Hussein/Samir Hussein/WireImage)

PARIS, FRANCE - MARCH 17: Catherine, Duchess of Cambridge visits The Elysee Palace on March 17, 2017 in Paris, France. The Duke and Duchess are on a two day tour of France. (Photo by Samir Hussein/Samir Hussein/WireImage)

PARIS, FRANCE - MARCH 17:  Catherine, Duchess of Cambridge visits The Elysee Palace on March 17, 2017 in Paris, France. The Duke and Duchess are on a two day tour of France.  (Photo by Samir Hussein/Samir Hussein/WireImage)

Kate, the Duchess of Cambridge, leaves the Elysee Palace in Paris after meeting France's President on March 17, 2017. British royals William and Kate arrived in Paris today in the prince's first official visit to the French capital since his mother died there. During the two-day trip, the couple will meet survivors of the 2015 terror attack on the Bataclan concert hall in Paris as well as President Francois Hollande. / AFP PHOTO / Martin BUREAU (Photo credit should read MARTIN BUREAU/AFP/Getty Images)

Kate, the Duchess of Cambridge, leaves the Elysee Palace in Paris after meeting France's President on March 17, 2017.
British royals William and Kate arrived in Paris today in the prince's first official visit to the French capital since his mother died there. During the two-day trip, the couple will meet survivors of the 2015 terror attack on the Bataclan concert hall in Paris as well as President Francois Hollande.
 / AFP PHOTO / Martin BUREAU        (Photo credit should read MARTIN BUREAU/AFP/Getty Images)