Who painted the enigmatic Giustiniani Portrait? You decide

Exclusive: The Royal Academy will ask public to vote whether Giorgione or Titian created masterpiece at exhibitionIt has divided leading experts in the art world, split for decades on which Renaissance master painted this young man’s portrait. But now the Royal Academy is relying on amateur enthusiasts to decide whether Giorgione or Titian created the central canvas in their upcoming Venetian collection. Curators of the exhibition have asked the public to vote on the attribution of the pai