MADRID, SPAIN - MARCH 30:  (L-R) Camilla, Duchess of Cornwall, Prince Charles, Prince of Wales, Prince Felipe of Spain and Princess Letizia of Spain arrive for a Gala Dinner at the Palacio Real de Madrid  during day one of a three day visit to Spain on March 30, 2011 in Madrid, Spain. (Photo by Samir Hussein/Getty Images)
Queen Elizabeth II and Prince Philip on a state visit to Spain seen here with the Spanish Royal Family. L - R; Juan Carlos I, Princess Elena of Spain, Queen Elizabeth II, Princess Cristina of Spain, Queen Sofia of Spain, Prince Felipe of Spain, Prince Philip, Madrid, 17th October 1988. (Photo by Georges De Keerle/Getty Images)  Madrid, 17th October 1988. (Photo by Georges De Keerle/Getty Images)
LONDON, ENGLAND - AUGUST 11:  Queen Sofia, Prince Felipe and Crown Princess Letizia of Spain attend the Women's Handball Bronze medal match between Spain and Korea on Day 15 of the London 2012 Olympics Games at Basketball Arena on August 11, 2012 in London, England.  (Photo by Pascal Le Segretain/Getty Images)
LONDON, ENGLAND - APRIL 29:  Queen Sofia of Spain, Prince Felipe of Asturias and Princess Letizia of Asturias arrive to attend the Royal Wedding of Prince William to Catherine Middleton at Westminster Abbey on April 29, 2011 in London, England. The marriage of the second in line to the British throne is to be led by the Archbishop of Canterbury and will be attended by 1900 guests, including foreign Royal family members and heads of state. Thousands of well-wishers from around the world have also flocked to London to witness the spectacle and pageantry of the Royal Wedding.  (Photo by Chris Jackson/Getty Images)