It's being made using the Elegant Ladies Closet pattern from Sense & Sensibility. Earlier this year I had in mind to make Marianne's picnic outfit and made the peach robe; pictures here and here, and though I've had the white sheer voile fabric, it hasn't been until now that I've pulled it out of my stash to start working on it.
It's not even all the way cut out yet, and am I 99% sure that it will be a keeper. As much as I can, I'm going to attempt to do french seams on the inside instead of a serger, and hand sew all the outer (visible) seams. As much as I dislike handsewing, I think it would be worth it in the long run.
My apologies to anyone who was secretly wishing for it themselves. =)