A female who takes a large amount of different pictures of ones self until she's found the correct one. Once found, the pictwhore will then put it onto her computer and use some form of editing, completely changing the picture and eliminating any imperfections, essentially making herself look attractive, which she is not in reality.
picwhore (verb): to post pictures of oneself on an internet forum in an attempt to draw attention to oneself, usually done by lonely nerds with no friends to fish for comments from other lonely nerds with no friends
picwhore (noun): one who picwhores
DF: poast pix
HG: hehehe here's a pic of me straddling a chair do you guys like
Lb: omg she is soooooo hot
MC: no she is a picwhore
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JH: *posts pictures of self*
LJ: you look like you're going to eat the cameraman
JH: *posts another pic* how about in this one?
LJ: you still look like you're going to eat the cameraman
JH: *posts another pic* do i really look like that???
LJ: stop picwhoring JH, you aren't going to change my opinion