it's a difficult subject to discuss objectively, but it appears from this thread that there are
currently no known poser sites that allow poser renders of anatomically correct children's
genitals.  there was at least 1 site that allowed this in the past, indicating an increase in
opposition to such renders.  there may have been other such sites, but I was never able to
access (or even locate) their galleries.

just to remind: in the states, the supreme court ruled that it's legal to post 3d renders of
nude children.  I don't know if all the major poser sites are in the states, nor the specific
reasons why none of 'em allow nudie pix of kids.