Britain's Prince Harry, son of the late Princess Diana, prepares to greet guests as they arrive for the Service of Thanksgiving for the Life of Diana at the Guards' Chapel at Wellington Barracks in London, August 31, 2007. Hundreds of mourners gathered in Paris and London on Friday to mark the tenth anniversary of the death of Princess Diana, an object of enduring fascination around the world. REUTERS/Pool/Lewis Whyld/WPA/PA Wire (BRITAIN)