The impossibly gorgeous Amber Heard! (Pineapple Express, Zombieland and DRIVE ANGRY 3D)
Based of this lovely photograph: [link]
Hair was a pain in the ass to paint, but I figured out a little method I may share in another tutorial
Worked on this over 5 or 6 days.
Skin texture brushes, dodge/burn, blur/sharpen- go nuts with those tools!