Oh.

Just lower the specular a bit on the light in the material room. Can you do that in Superfly? Actually I don't think you can. You can't modulate a lights diffuse with an add node in Superfly like you can in Firefly so maybe it's not possible. The only other option would be to change the blinn reflectivity on your skin materials I guess. I don't know your material set up. A roughness map would help alot. Probably definitely hborre could give better advice on that front.

My advice was going to be to either get a more sheer sort of drape on the dress, cloth density probably, or use the morph brush to suggest it isn't as stiff as it appears... I think just pushing the one side of the hem in a bit closer to the thigh would help for a more naturalistic look but that's probably just being nitpicky. These are the things I fret about.