A is a desperation photo. This is a woman that used to be bad but is not anymore. She's trying old tricks hoping that it would magically spark the old juice she once had. But deep inside she knows that those days are over and that causes the look of spurn on her face.
B is a girl who has the self-confidence to wear a top like that. She considers herself to be moderately attractive. And chances are, she is.
C has no self-awareness. She's clearly trash and doesn't know it. Not only is she likely ugly, but she does things that somehow make it look even worse.