DUNEDIN, NEW ZEALAND - APRIL 13:  Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge arrive at Dunedin International Airport on April 13, 2014 in Dunedin, New Zealand. The Duke and Duchess of Cambridge are on a three-week tour of Australia and New Zealand, the first official trip overseas with their son, Prince George of Cambridge.  (Photo by Rob Jefferies/Getty Images)