KAZIRANGA, INDIA - APRIL 12:  Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge watch dancing by the fireside during a Bihu Festival Celebration at Diphlu River Lodge on day 3 of the royal visit to India and Bhutan on April 12, 2016 in Kaziranga, India. The Duke and Duchess of Cambridge are on a week-long tour of India and Bhutan taking in Mumbai, Delhi, Assam, Bhutan and Agra.  (Photo by Chris Jackson/Getty Images)