I had the pleasure of doing headshots for Traci when she was in Minneapolis on a break from her show. She's currently touring with The Color Purple and having a great time.
We did some simple shots in the studio, which is how I usually like to start. It helps us select the right wardrobe and lets us get comfortable on our respective sides of the camera. After picking out a couple of shirts that would work, we found some great natural light and got started.
For photographers: When shooting natural light headshots, I almost always use a reflector to fill in shadows and put some black foam core on the floor to cut the glare, which can throw off the color balance on the skin.
Here's the setup for these shots:
Camera, lens and settings: Canon 5D MkII, 85mm, ISO 320, 1/200 sec., f/3.5