WARSAW, POLAND - JULY 17:  First Lady Agata Kornhauser-Duda and Catherine, Duchess of Cambridge look on as President Andrzej Duda and Prince William, Duke of Cambridge light a candle at the Warsaw Rising Museum on day 1 of their official visit to Poland on July 17, 2017 in Warsaw, Poland. The museum is dedicated to the uprising of 1944 which saw the Polish resistance attempt to liberate Warsaw from German occupation   (Photo by Samir Hussein/Samir Hussein/WireImage)