MONTE-CARLO, MONACO - AUGUST 01: (L-R) Duke Of Castro and Princess Camilla, Duchess Of Castro attend the 66th Monaco Red Cross Ball Gala at Sporting Monte-Carlo on August 1, 2014 in Monte-Carlo, Monaco. (Photo by Pascal Le Segretain/French Select/Getty Images)

MONTE-CARLO, MONACO - AUGUST 01:  (L-R) Duke Of Castro and Princess Camilla, Duchess Of Castro attend the 66th Monaco Red Cross Ball Gala at Sporting Monte-Carlo on August 1, 2014 in Monte-Carlo, Monaco.  (Photo by Pascal Le Segretain/French Select/Getty Images)