WARSAW, POLAND - JULY 17: The Duke of Cambridge, Prince William (2L) and Catherine, Duchess of Cambridge (L) with President of Poland Andrzej Duda (2R) and the first Lady Agata Kornhauser-Duda (R) pose to the picture during an official visit by the Duke And Duchess Of Cambridge on July 17, 2017 in Warsaw, Poland. (Photo by Adam Nurkiewicz/Getty Images)