Polyester is certainly less noble than silk, but, in many cases, it is my favourite material to make practical clothes that I will be able to handle as roughly as I wish to.
I was inspired by a gown from Feminine Wardrobe by Jinko Matsumoto (available @ 14€ on bookdepository, shipping fee included to most destinations).
I like the collar which is pretty large, and also the puff sleeves.
I have added a belt, so I won’t have the impression of swimming in this dress.
To finish neatly, I have stitched a navy blue bias tape, that can’t be seen.