there is a nipple slip from this photoshoot if u can download the full set it's " img 143"
Kristen Stewart - Matthias Vriens Photoshoot 2010 for Elle
I think it would be permissable to post one or two photos, if you have them. Try making at least one of them an attachment. It's possible they'll get removed (by the pic hosts or even by this site after a while) but it's worth trying.