'Nude Mona Lisa' may have been drawn by Leonardo da Vinci - CNN Style(01)

'Nude Mona Lisa' may have been drawn by Leonardo da Vinci - CNN Style(01)

Image gallery: Mona Lisa Naked

Did Leonardo da Vinci Sketch the ‘Nude Mona Lisa’? - The New York Times 'Nude Mona Lisa' may have been drawn by Leonardo da Vinci - CNN Style Mona Lisa nude: topless sketch may be by Leonardo da Vinci