Italian fashion designer Roberto Cavalli (C) arrives with models for the opening ceremony of the 21st Life Ball in Vienna May 25, 2013. Life Ball is Europe's largest annual AIDS charity event and takes place in Vienna's city hall. REUTERS/Leonhard Foeger (AUSTRIA - Tags: ENTERTAINMENT POLITICS FASHION SOCIETY)
Italian fashion designer Roberto Cavalli (C) arrives with models for the opening ceremony of the 21st Life Ball in Vienna May 25, 2013. Life Ball is Europe's largest annual AIDS charity event and takes place in Vienna's city hall. REUTERS/Leonhard Foeger (AUSTRIA - Tags: ENTERTAINMENT POLITICS FASHION SOCIETY)