ADELAIDE, AUSTRALIA - APRIL 23:  Catherine, Duchess of Cambridge gestures to Prince William, Duke of Cambridge to play on DJ decks at the Northern Sound System on April 23, 2014 in Adelaide, 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 Morne de Klerk - Pool/Getty Images)