Belgium's (front row, L-R) Queen Paola and King Albert II applaud Crown Prince Philippe and Crown Princess Mathilde at a Te Deum mass celebrating the 20th anniversary of the reign of Belgium's King Albert II, the Belgian National Day, King Albert's abdication and the inauguration of his successor King Philippe, at St Gudule Cathedral in Brussels July 21, 2013. Princess Astrid, Princess Claire and Prince Laurent (2R) stand behind. REUTERS/Kevin Coombs (BELGIUM - Tags: ENTERTAINMENT ROYALS RELIGION TPX IMAGES OF THE DAY) (KING-BELGIUM)