The Duke And Duchess Of Cambridge Tour Australia And New Zealand - Day 14 [Getty Images]

SYDNEY, AUSTRALIA - APRIL 20: Catherine, Duchess of Cambridge holds Prince George of Cambridge as Prince William, Duke of Cambridge look whilst meeting a Bilby called George at Taronga Zoo on April 20, 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 Chris Jackson/Getty Images)

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