COPENHAGEN, DENMARK - MARCH 24:  Princess Mary of Denmark and Camilla, Duchess of Cornwall talk at Copenhagen Kastrup Airport on March 24, 2012 in Copenhagen, Denmark. Prince Charles, Prince of Wales and Camilla, Duchess of Cornwall are on a Diamond Jubilee tour of Scandinavia that takes in Norway, Sweden and Denmark.  (Photo by Chris Jackson/Getty Images)
CHICAGO - MARCH 23:  Crown Prince Frederik and Crown Princess Mary of Denmark attend the opening of the Climate & Energy Conference at the Chicago Cultural Center on March 23, 2009 in Chicago, Illinois. (Photo by Paul Warner/WireImage)