Britain’s Catherine, Duchess of Cambridge, gives her son George a commemorative card as he is held by his father Prince William at Bilby Enclosure in Taronga Zoo in Sydney

Britain’s Catherine, Duchess of Cambridge, gives her son George a commemorative card as he is held by his father Prince William at Bilby Enclosure in Taronga Zoo in Sydney

Britain’s Catherine, Duchess of Cambridge, gives her son George a commemorative card as he is held by his father Prince William at the Bilby Enclosure in Taronga Zoo in Sydney April 20, 2014. The Prince and his wife Kate are undertaking a 19-day official visit to New Zealand and Australia with their son George. REUTERS/Chris Jackson/Pool (AUSTRALIA – Tags: ROYALS ENTERTAINMENT)