AUCKLAND, NEW ZEALAND - APRIL 11:  Catherine, Duchess of Cambridge arrives at the Westpark Marina on a Sealegs amphibious marine craft at the Whenuapai RNZAF base on April 11, 2014 in Auckland, 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 Phil Walter/Getty Images)