Not the photo that's actually used. Every photo is cropped, and a lot of great photos were cropped after they were taken. So it is with the photo of her used in the computer graphics world.
Just to make it clearer: There's a valid reason a photo of a human being showing some skin is used. Humans know, at a very deep level, what skin is supposed to look like. If the colors of skin are somewhat wrong, we'll know. We'll also know if the shape of the face is somewhat wrong, for example, which makes it easier to see other kinds of errors or infelicitous compression artifacts. All of this is further helped by using the same image in a wide variety of contexts over a long period of time.
