Someone, in most cases a woman, that has an over obsession with taking photos of themselves. Whether they're home alone, out with friends, or going planking. They must have picture proof, of how cool they are.
Person 1: "Hey, did you see Jenna's new beach photos?"
Person 2: "Didn't she just upload some of her yesterday coneing at McDonalds?"
Person 1: "Yeah.. She's a total Picture Whore."