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)
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Getty Images Entertainment Adam Nurkiewicz

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)
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Getty Images Entertainment Adam Nurkiewicz

WARSAW, POLAND - JULY 17: (NO UK SALES FOR 28 DAYS FROM CREATE DATE) Catherine, Duchess of Cambridge, Prince William, Duke of Cambridge, President of Poland Andrzej Duda and the first Lady Agata Kornhauser-Duda visit the Presidential Palace during an official visit to Poland and Germany on July 17, 2017 in Warsaw, Poland. (Photo by Pool/Samir Hussein/Samir Hussein/WireImage)
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WireImage Pool/Samir Hussein

WARSAW, POLAND - JULY 17: (NO UK SALES FOR 28 DAYS FROM CREATE DATE) Catherine, Duchess of Cambridge, Prince William, Duke of Cambridge, President of Poland Andrzej Duda and the first Lady Agata Kornhauser-Duda visit the Presidential Palace during an official visit to Poland and Germany on July 17, 2017 in Warsaw, Poland. (Photo by Pool/Samir Hussein/Samir Hussein/WireImage)
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WireImage Pool/Samir Hussein

WARSAW, POLAND - JULY 17: Prince William, Duke of Cambridge (second left) and Catherine, Duchess of Cambridge (second right) with President Andrzej Duda (R), First Lady Agata Kornhauser-Duda (L) and guests at the Presidential Palace on day 1 of their official visit to Poland on July 17, 2017 in Warsaw, Poland. (Photo by Chris Jackson - WPA Pool/Getty Images)
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