Art world tea: Klaas Muller bought a mysterious painting on a hunch, and it turned out to be a double Rubens! The real twist? One side is a bearded old man, the other a young woman—both painted by Rubens himself. Now fans are debating: did Rubens mean to create an optical illusion, or was he just recycling canvas? Either way, this two-in-one masterpiece is causing major buzz before its big museum debut. #Entertainment #Painting #Rubens