Did Leonardo da Vinci paint two Mona Lisas? Where are they?

Source: Chantilly, Musée Condé, France.

There is only one Mona Lisa, at the Louvre, fully credited to Leonardo. However, there are several Mona Lisa look-alikes from his studio, some of them quite saucy. The one most similar to the Louvre one is the Prado Mona Lisa, a copy made simultaneously in Leonardo's workshop while he painted the Mona Lisa, probably made by an apprentice(s):

Donna Nuda:

What do you think about Vivian Jenna Wilson's decision to speak out against her father, Elon Musk, in a public interview with NBC News?

Evidently there was a market for erotic paintings. The American art historian David Brown, curator of Italian Renaissance paintings at the National Gallery of Art in Washington, has suggested that da Vinci painted a saucy parody of the Mona Lisa for his patron Giuliano de Medici, and that the Salai version is a copy.

For the one below, art experts suggest that it contains touches indicating that Leonardo contributed to it.

Another version of the above exists, attributed to Salaj:

Is it very wrong to want to spend some time with husband after continuous work for 5 days in a weekend because my husband thinks if we go out every weekend what night my parents and other family members think?

Obviously, the original Mona Lisa also inspired some cheeky versions of her.

La Joconde nue:

Source: Louvre, Paris, France.

9 Things Women’s Health Doctors Would Never Do - HuffPost

While overall similar, there are differences in the shape of the face, the background and other details.

Then there are the ‘meza nuda’ paintings from his workshop, often referred to as Monna Vannas.

Source: St Petersburg. Hermitage, Russia.

Have you ever forcibly sucked someone’s dick?