Aye and if you're considering putting such photos anywhere be sure to get the girl to sign a model release form first and cover your arse. You can take photos of anyone if 'just for your personal use and not for reproduction or publishing anywhere' and that is the nature and understanding, and indeed what can be considerred an unwritten contract betweeen consenting parties, of taking snaps of friends and acquaintances. But if you are considering putting them somewhere that could be considered 'broadcasting or publishing', you can easily find yourself in all sorts of shit.
You can download umpteen different ones for free on the net.
With all this revenge stuff happening now better safe than very sorry.