QUEENSTOWN, NEW ZEALAND - APRIL 13:  Catherine Duchess of Cambridge and Prince William, Duke of Cambridge travel on the Shotover Jet on the Shotover River on April 13, 2014 in Queenstown, 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 Chris Jackson/Getty Images)