This is not strictly period. We bought the brocade from JoAnns, and it's not a natural fiber, but the pattern bears enough of a resemblance to period fabrics (to me!) that I didn't think it screamed "I'm a modern garment!" at the top of it's lungs. :D
It's actually closer to an 1850s style, with a longer bodice and double piping to finish off the hem of the bodice. Made in two pieces and whipped together, with hook and eye closure, which I've since discovered I did wrong! Glad to learn it, because it just wasn't working out. I did a modern hook and eye closure in the back, meaning that the fabric didn't overlap, it joins almost like an invisible zipper, only it seems that not matter how closely together I sewed them, there was a gap! I ended up putting in a modesty panel.
Enjoy!