You can never see yourself the way you are to someone else - to a man looking at you, from behind, when you don't know - because in a mirror your own head is always cranked around over your shoulder. A coy, inviting pose. You can hold up another mirror to see the back view, but then what you see is what so many painters have loved to paint - Woman Looking In Mirror, said to be an allegory of vanity. Though it is unlikely to be vanity, but the reverse: a search for flaws. What is it about me? can so easily be construed as What is wrong with me?
Margaret Atwood, The Blind Assassin
vanity