Charles & Marty, thank you both for taking a moment to comment. The background is a Muslin fabric which is actually a grey color. It would not be my first choice because of its "business", but this was a group shoot and I was out-voted in favor of using it. So, in order to make a better separation between background and the models outfit, I chose to edit the grey color into a green within PS. I really wanted this image to "POP" with color. Thanks again for the comments.
Could be both actually...I love the look, the pose, the model...hate the green background. It does compliment the red hair, but too much for me, in my opinion. :-)