The Duke And Duchess Of Cambridge Tour Australia And New Zealand - Day 10 [Getty Images]

SYDNEY, AUSTRALIA - APRIL 16: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge are seen on a boat as they depart the Sydney Opera House on April 16, 2014 in Sydney, 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 Don Arnold/WireImage)

WireImage Don Arnold