ST. AUSTELL, UNITED KINGDOM - SEPTEMBER 02: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge visit the Eden Project in Cornwall on September 2, 2016 near St Austell, England. (Photo by Arthur Edwards - WPA Pool/Getty Images)
ST. AUSTELL, UNITED KINGDOM - SEPTEMBER 02: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge visit the Eden Project in Cornwall on September 2, 2016 near St Austell, England. (Photo by Arthur Edwards - WPA Pool/Getty Images)