VIENNA, AUSTRIA - APRIL 05: Prince Charles, Prince of Wales and Camilla, Duchess of Cornwall are greeted by State Secretary Muna Duzdar (L) as they arrive at Vienna International Airport on April 5, 2017 in Vienna, Austria. (Photo by Chris Jackson/Getty Images)
VIENNA, AUSTRIA - APRIL 05: Prince Charles, Prince of Wales and Camilla, Duchess of Cornwall are greeted by State Secretary Muna Duzdar (3rd L) as they arrive at Vienna International Airport on April 5, 2017 in Vienna, Austria. (Photo by Chris Jackson/Getty Images)
The Duchess of Cornwall watches a wedding cake being made during a visit to Cafe Demel in Vienna, on the eighth day of a European tour. (Photo by John Stillwell/PA Images via Getty Images)
VIENNA, AUSTRIA - APRIL 05: Camilla, Duchess of Cornwall and Prince Charles, Prince of Wales visit Hofburg Palace on April 5, 2017 in Vienna, Austria. Her Royal Highness will accompany the First Lady, Doris Schmidauer, on a tour of the presidential apartments whilst His Royal Highness and the Federal President, Alexander Van der Bellen, hold a bilateral discussion with the Austrian and British delegations. (Photo by Chris Jackson - Pool/Getty Images)
Camilla, Duchess of Cornwall (R) and Doris Schmidauer (L) greet wellwishers the Hofburg palace in Vienna, Austria on April 5, 2017. / AFP PHOTO / APA / HANS PUNZ / Austria OUT (Photo credit should read HANS PUNZ/AFP/Getty Images)
