This is Simplicity 4662, from the early 1940's (probably 1942 1943). I made it in black linen to wear to my grandmother's memorial service last weekend. I wrote about my grandmother and my motivation to make this dress on my blog. I had to rush to finish it in time, so it turned out OK but not great. At the memorial service my family said the dress looked good, but I think they're biased.
I messed with the lightness of the photo so you can see more of the details of the bodice. Photographing back fabric is hard!
All the construction details are at Chronically Uncool.