I was intending to show the fabric hanging away from her breasts a little--perhaps the mistake in it is the darkness of the various lines in that area. The underside of her right breast is visible as the left-hand part of the dark line at the base of her chest, while the right-hand portion of that same curving line is actually the outline of the shift resting over the top of her left breast. It's a bit visually confusing, I think.
Ah well.
Thanks for the comment!