A charcoal drawing of a nude woman who bears a striking resemblance to the Mona Lisa may be the work of Leonardo Da Vinci, according to experts at the Louvre.

The drawing, known as the Monna Vanna, has long been believed to have been produced by his studio, but not necessarily by the Renaissance master himself.

Experts at the Louvre in Paris, which houses the world’s largest collection of Leonardo’s work, including the Mona Lisa, now believe that the nude is probably his work.

It will be included in a special exhibition at Chantilly later this year to commemorate the 500th anniversary of Da Vinci’s death.

The drawing is a preparatory sketch for a painting of a semi-nude woman and is housed at the Condé Museum at the château of Chantilly, 25 miles north of Paris, according to experts.