This wasn't exactly what I set out to create, and I have others in the set which are far closer to the image I had in my head, but I chose this because I prefer the composition and then I took the processing in a slightly different direction.
Just one SB600 fired as a rim light on 1/2 power to the camera's right, bare. Triggered with Pocket Wizard Plus IIs.
Silver reflector on the ground.
...But mostly - this is all natural sun!