Yeah that actually crossed my mind to do a tutorial on that shot, I'll probably just film me making it again, though a lot of my post processing methods are far from traditional so keep an open mind!
Here's a summary of how I did it:
Lighting
2 light setup, I used static lighting. One 28" x 20" soft box about 10" above model facing straight (beauty dish position). Then a strobe model light with barn doors (for a harsh edge light) positioned model back left.
Camera
Shooting on my Nikon D5100 and kit lens, I was a bit limited. I shot about 6 feet away at f5
I think it was iso400 1/20 f5.
Post Processing (yay!) (note: I process every photo differently, these are loose points I generally hit every time)
This is by far my favorite thing to do. I'm a long-time graphic designer, but very very new to photography, so post is my comfort zone
Skin
First I clean the skin with spot healer (as everyone does), then after considering the light source and how it's already wrapping the model, I shape the light by hand with a brush (actually a wacom tablet). Sometimes I'll even draw hard tapered light vector shapes in Illustrator, raster them in PS and then apply a gaussian blur. After that I just set to overlay and adjust opacity as I see fit. I'll typically merge those layers together and then smooth with the blending brush (set at no higher than 4%). I may run it through the PS HDR filter if I didn't do real bracketed exposure, but I try to keep it as tame as possible.
Image Processing
This is how I build contrast (as least destructively as possible), with light shaping by hand, I also do the same shaping techniques with the shadows which usually makes them more obvious. Then, once the image is sort of close to what I want, I'll duplicate all the layers, save a new version, then flatten it and start adjusting the color curves of the image as a whole, usually adding sublte vignette layers, etc.
That's a crash course description of the general things I do in post, but each photo I have to invent new ways of doing stuff! The longer I do photography, the easier my post is getting because the images I have to work with are slowly getting better. Maybe I should get around to recording my post processing some time...