The fabric was easy enough to find - I have long admired Kathy of Pink Chalk Fabrics and she thankfully, thankfully had this one below on sale. My daughter took one look and exclaimed 'that one!' and looking closer I saw it was from Windham's Centennial collection 1780-1880, perfect.
Then we needed to select something for the bodice, and ordered this one below to coordinate. It's a little bigger and bolder, but only a small piece is needed, and the color was perfect, so I think it will work.
On to the pattern. It will take a bit of a hack to make it, um, wearable - in Virginia, in August -
In searching for the pattern, I found this blog post by Mama Made, where another mother had the same exact idea. I love how it came out, and love that she used some Amy Butler as the main print. Had I seen that blog post first, I might have gone with the McCall's pattern, but it's always good to start a new adventure.
The trip is planned for August 1st, so I have a few weeks to complete it. I'll post pictures when it is complete. :)