WELLINGTON, NEW ZEALAND - APRIL 16: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge look at the friendship bands they were given during a walk about in Civic Square on April 16, 2014 in Wellington, 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 Marty Melville - Pool/Getty Images)