Isleworth Mona Lisa
According to Leonardo's early biographer Giorgio Vasari, Leonardo had started to paint "Mona Lisa" in 1503, but "left it unfinished". However, a fully finished painting of a "certain Florentine lady" surfaced again in 1517, shortly before Leonardo's death and in his private possession. The latter painting almost certainly is the one that now hangs in the Louvre. Based on this contradiction, supporters of the authenticity of the "Isleworth Mona Lisa" claim it is the unfinished "Mona Lisa", made at least partially by Leonardo, and the Louvre "Mona Lisa" a later version of it, made by Leonardo for his own use.
Mona Lisa replicas and reinterpretations
Among the most common motifs for satirization, "Mona Lisa"'s face is embellished upon; adding a red Santa cap for Christmas, or, as Duchamp had done, simply adding a mustache.
Replacing "Mona Lisa"'s face or head altogether is another common motif; substituting the head of an animated character such as Betty Boop, for example.
British artist Caroline Shotton in 2007 produced a series of paintings replicating classical works of art as "cows", which she would go on to title her "Great "Moo"-sters" series.
The inspiration for the series, she says, came to her while watching a documentary about "Mona Lisa".
Having settled upon the cow motif, she then formulated puns befitting her chosen subjects; whereby "Mona Lisa" became "Moo"-na Lisa.