This pattern is AWESOME.
I have made three versions - the first is my wearable muslin out of my go-to Brussels washer linen. I made it based on my full bust measurements (before I knew how to measure for upper bust and do a FBA) and it ended up being slip-over-the-head huge. So no zipper. However, it's very comfortable and good for the beach. Sometimes it's nice to have a huge swingy linen dress. :)
Version three - is a quilting cotton with gold detailing. Very sturdy.... I used flat felled seams which allowed me to subtly decrease the seam allowances along the curving bust lines and increase them in the underbust. This is a bit of a cheat, but it worked well, and the dress fits very nicely. I added gold pre-made bias tape for detailing... and a quilting ribbon along the hem. I'm amazed it washes and wears as well as it does. Lucky me. :)