Opera singers Anna Netrebko and Yusif Eyvazov arrive for the opening ceremony of the 23rd Life Ball in...
Opera singers Anna Netrebko and Yusif Eyvazov arrive for the opening ceremony of the 23rd Life Ball in Vienna, Austria May 16, 2015. Life Ball is Europe's largest annual AIDS charity event and takes place in Vienna's city hall. REUTERS/Leonhard Foeger