VALLETTA, MALTA - SEPTEMBER 21:  Prince William, Duke of Cambridge meets a young boy during a walk-about in Vittoriosa Square on an official visit to Malta on September 21, 2014 in Valletta, Malta. Prince William, Duke of Cambridge is making an official two day visit to Malta as a representative of Queen Elizabeth II. Originally the Duchess of Cambridge was due to make the trip as her first solo overseas engagement as part of Malta's fiftieth Anniversary of Independance but had to cancel due to acute morning sickness with her second child.  (Photo by Chris Jackson/Getty Images)