Thanks for all of the comments guys. The vignettes were not added in editing. I shot this series using 2 JTL J-160 Strobes with halogen headlamps fixed with snoots for light direction. Each one were set in the back left and right corners of the room to create a "spotlight" effect on the subjects. I do see where you all are coming from, though. Too much contrast, and the vignettes actually take away from the image.
Next time I shoot portraits I will make the light scale more evenly across the plane.
Any other suggestions?