Somebody who at a big occasion takes photos with everybody they have even the slightest relationship with, so that they can put them up on facebook and make themselves feel popular

Especially keen on the one-on-one shots, and photos with the opposite sex.

Also picture slutted, and picture slutting

Also picture slutface, which is the same except the person concerned looks really ugly or slutty in his or her photos

Large, beautiful breasts that are keep well consealed and initially appear to be much smaller and less impressive than they actually are until unleashed.