Time for something unexpected: The Nude Mona Lisa drawn by Leonardo da Vinci. It represents a young woman seated in a three-quarter profile with her hands crossed. Her breast is exposed, and she seems to be gazing at the viewer with an ambiguous smile. Her hair, skillfully coiffed and braided, underlines her exceptional beauty.
It is one of the largest cartoons (72.4 by 54 cm or 28.5 by 21 inches!) to have survived from the period that shows an isolated full-sized figure. It served as a draft for a painting. It is not sure if it served as a draft for the Mona Lisa; historically it is called so.
Beautiful, isn't she? She definitely has that Mona Lisa's smile!