I'm referring to the finished product of Butterick 4790 as The Mannequin Dress. It looks great when you stand still, but when you move, all sorts of weird things happen. The straight under-dress rides up (see photo below, where I obviously didn't adjust it down before CPM snapped the shot). If you take a deep breath or bend the wrong way, the snaps might pop open, and then your lady parts are exposed for all the world to see.
Me Not Moving:
Still, I liked the way the bottom skirt was all twirly and fun. I had to find a way to save it for at least one wear. So I dug through my closet and found my favorite sweater. I think I can make this work, if I add a few extra snaps to the waist portion for added insurance and use the sweater to cover the top part not fitting me as well as it should. Also, I should probably wear a bra. I just threw this on from wearing my PJs and skipped that important foundational undergarment.
Maybe This Can Work: