The Duke And Duchess Of Cambridge Tour Australia And New Zealand - Day 18 [Getty Images]

CANBERRA, AUSTRALIA - APRIL 24: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge take part a tree planting as they visit the National Arboretum on April 24, 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 Mark Nolan/Getty Images)

Getty Images Entertainment Mark Nolan