RIYADH, SAUDI ARABIA - MARCH 15: Camilla, Duchess of Cornwall arrives at Riyadh Airbase on the fifth day of a tour of the Middle East on March 15, 2013 in Riyahd, Saudi Arabia. The Royal couple are on the third leg of a tour of the Middle East taking in Qatar, Saudia Arabia and Oman. (Photo by Chris Jackson/Getty Images)

RIYADH, SAUDI ARABIA - MARCH 15:  Camilla, Duchess of Cornwall arrives at Riyadh Airbase on the fifth day of a tour of the Middle East on March 15, 2013 in Riyahd, Saudi Arabia. The Royal couple are on the third leg of a tour of the Middle East taking in Qatar, Saudia Arabia and Oman.  (Photo by Chris Jackson/Getty Images)