LOVE dramatic belly shots! Would have liked a little deeper DOF so that her breasts/face/neck/hand were a little sharper. But then again, her belly is the focus!
This is about the best maternity shot I've seen ever. You've made the most beautiful tones and well, it's just a great image. Congratulation if this is your child!
I'm fascinated by the convention of showing the wedding ring for nude pregnant shots. It's kind of a submissive gesture in the midst of an otherwise brazen display of feminine power. "See, look, I had some help." Or maybe it's, "see? the baby's official. the baby's accounted for." I think maybe it seems more odd when you're not even showing the face of the pregnant woman. Maybe you're trying to make a statement about traditional families, but then again traditional families don't go showing their privates. Oh wait, *photography* comments... well, you clearly know how to light a subject. No blown out areas, just enough highlight to make out the form and show texture.