GDANSK, POLAND - JULY 18: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge join a street party on July 18, 2017 in Gdansk, Poland. (Photo by Arthur Edwards / Pool / Getty Images)
GDANSK, POLAND - JULY 18: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge join a street party on July 18, 2017 in Gdansk, Poland. (Photo by Arthur Edwards / Pool / Getty Images)