I do like what Bob was attempting to do here, but I'm having the same problem with it as MD is, and I think it may be due to the lighting in the picture.
Judging by the shadows, the lighting on Emma's face seems to be both dimmer, and from the right, where as the lighting on Chloe's body seems to be from the left, and more uniform in brightness. Hate to say it, but it makes it seem to me that Emma has a problem with a bit of a five o'clock shadow.
