Leonardo da Vinci - The Lady with an Ermine 'Portrait of Cecilia Gallerani'

The Lady with an Ermine 'Portrait of Cecilia Gallerani' by Leonardo da Vinci, 1483-1490. 

Leonardo da Vinci was an Italian painter, draftsman, sculptor, architect, and engineer whose skill and intelligence, perhaps more than that of any other figure, epitomized the Renaissance humanist ideal.