Pierre Casiraghi and girlfriend Beatrice Borromeo  leave the church after the wedding ceremony of the Prince of Luxembourg with a German student on September 21, 2013 at the Saint Mary Magdalene Basilica in Saint-Maximin-La-Sainte-Baume, southern France. AFP PHOTO / ANNE-CHRISTINE POUJOULAT        (Photo credit should read ANNE-CHRISTINE POUJOULAT/AFP/Getty Images)