The Duke And Duchess Of Cambridge Tour Australia And New Zealand - Day 19 [Getty Images]

CANBERRA, AUSTRALIA - APRIL 25: Catherine, Duchess of Cambridge, Prince George of Cambridge and Prince William, Duke of Cambridge depart Australia from Defence Establishment Fairbairn on April 25, 2014 in Canberra, Australia. 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 Samir Hussein/WireImage)

WireImage Samir Hussein