The Portrait of Bia de' Medici is an oil-tempera on wood painting by Agnolo Bronzino, dating to around 1542 and now in the Uffizi in Florence. Its subject's identification, according to the Walters Art Museum and scholarship sponsored by the National Endowment for the Humanities is likely Giulia de' Medici. Some art historians once identified the child as a young Cosimo I de' Medici, but it is now generally accepted to be Giulia. The child in the portrait appears to be a little girl, rather than a boy, and her expression is anxious. Maria Salviati, who is dressed soberly as befitted a widow, is seen sheltering the vulnerable child against her side.... Her complexion is a pale white because Bronzino painted the portrait using her death mask as a model. Bia has her hair parted in the middle of her forehead and a falling bob, with two carefully tied braids framing the face. She wears pearl earrings, a gold chain with a...