Catherine, the Duchess of Cambridge, reacts as she plays with her son Prince George in Wellington

Catherine, the Duchess of Cambridge, reacts as she plays with her son Prince George during a Plunket nurse and parents group event at the Government House in Wellington April 9, 2014. The Royal New Zealand Plunket Society, or Plunket for short, is a national not-for-profit organisation that provides care for children and families in New Zealand. Britain’s Prince William and his wife Kate are undertaking a 19-day official visit to New Zealand and Australia with their son George. REUTERS/Marty Melville/Pool (NEW ZEALAND – Tags: ROYALS ENTERTAINMENT)