A museum-quality digital concept painting of a 30 yo mature Lisa Gherardini, the 16th Century artist model, and Leonardo da Vinci in a Renaissance artist workshop interior. She is on her knees on a polished stone floor, straddling Leonardo, wearing a black silk, loosely draped undergarment that slips down to reveal her exaggerated, massive breasts, and lifted asswhile her face remains turned toward the viewer, retaining her iconic, enigmatic half-smile. Leonardo da Vinci, dressed in 15th-century Florentine scholar attire, (velvet doublet, fur-lined cloak, holding her hips as he fucks her ass), kneels behind her, penetrating her from behind, his penis balls deep in her vagina, his expression one of intellectual curiosity mixed with passion. The scene is illuminated by dramatic Baroque-style chiaroscuro lighting, with a single strong light source from the upper left casting deep, rich shadows across their bodies and the background. The background features blurred Renaissance architectural elements, columns, and an unfinished painting of the Mona Lisa on an easel. Highly detailed skin textures, realistic anatomy, soft oil painting texture, 8k resolution, cinematic composition, masterpiece.