PARIS, FRANCE - JUNE 20: (in front) "S.A.R. Princesse Barbara de Yougoslavie", her son "S.A.R. le Prince Dushan de Yougoslavie" and (behind) "S.A.S. Prince et Princesse Philipp de Liechtenstein" attend the Mass in Memory of "S.A.R. Le Prince Alexandre De Yougoslavie" at Cathedrale Saint-Alexandre-Nevsky on June 20, 2016 in Paris, France. (Photo by Bertrand Rindoff Petroff/Getty Images)
