A tad too forced. Her rib cage jutting out just doesn't look natural. I'd like to see this in more of a studio type setting with lights and a solid background, in a more relaxed pose.
So this is what you were doing while us crazy folks were standing out in the cold huh? ;-) Obviously we can see who has the brains in our group and I'm pretty sure it wasn't us. LOL!
The pose is too intense and fake. Should have been a lot more subtle. The curve of the back is lost due to her left arm being visible. Otherwise, beautiful model. Nice setting. Could use a bit more light to soften up the shadows.