I don't own Real Skin for V4, I use Snarlygribbly's EZSkin to get a better render. I noticed that your scatter node is not connected to anything on the Posersurface. That may be the problem but I can't be sure. The lingerie looks okay, I question the image texture node plugged into the specular color with no value associated with it. Technically, nothing is happening there to influence your render. Using another image map for both Gradient_bump and displacement does not look right either. Although those two connectors interpret the maps as black & white data, a colored texture map will give a very different value. If that is truly the same map used for the diffuse, I would run it through a math function node set to subtract value 1 = 1 from value 2 = 0, with the node connected to value 1. I can be sure whether that would fix the problem, but a least it will clean up the node arrangement. What Poser version are you using?