Mona Lisa’s best copy could be the one in Madrid’s Museo del Prado.  Art experts believe that it was painted simultaneously as the original and possibly by Leonardo Da Vinci’s gay lover Gian Giacomo Caprotti. Using the latest technologies, which allows one to see the different layers of paint, conservators say that Leonardo and the Mona Lisa replica painter made precisely the same changes simultaneously. They believe that the two paintings were painted side by side in the same studio, maybe a few feet from each other.