Over the past month, scientists at the Louvre have been carefully examining a 16th-century charcoal drawing of a nude woman known as “Monna Vanna,” long attributed to the studio of Leonardo da Vinci.

Experts at the Louvre in Paris are investigating whether a charcoal sketch of a nude figure that resembles the Mona Lisa may in fact be the work of Leonardo da Vinci. The drawing, known as the Mona ...

Could Leonardo da Vinci have drawn a nude version of The Mona Lisa? Art experts say that is entirely possible. This charcoal drawing, titled the Monna Vanna, is now thought to have at least been ...

It’s enough to make Mona Lisa blush. Experts at the Louvre museum in Paris on Thursday revealed that Leonardo da Vinci may have also painted a topless version — called Joconde Nue, or Monna Vanna — of ...