Y/Project layered midi dress

Y/Project layered slip dress. Archival deadstock! I wear it both ways and have no idea which is correct (yellow layered under, or with yellow silk on top 💛). French Size 38. Wrap style is flattering and allows the piece to work for many sizes. For reference I’m 5’6” and 28 US / 4 or 6. Minor imperfections due to age.