I used McCall's 6842 for the skirt and vintage Simplicity 7321 for the keyhole back bodice. I found the Simplicity pattern on Etsy.
I did have a little difficulty with the bodice. The pattern shows buttons at the shoulders, but I wanted it sewn together. It's a little tricky to get it on, but it works!
It wasn't possible to find a zipper to match, so white had to work!