CHRISTCHURCH, NEW ZEALAND - APRIL 14:  Prince William, Duke of Cambridge speaks during a lunch at the Wigram Air Base Museum on April 14, 2014 in Christchurch, 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 Iain McGregor  - Pool/Getty Images)