Elegant self stripe black satin Art Deco dress c.1930s vintage turban I've completely forgotten the name

I've completely forgotten the name for this type of L shaped opening as I'm a bit rusty

This is a jumpsuit

Paste section is approx 3 1/2” wide x 1 1/4” high

Self fabric covered buttons and loops to close

Elegant self stripe black satin Art Deco dress c.1930s vintage turban I've completely forgotten the nameA very elegant 1930s dress, featuring flying panels with pockets to the front, and some interesting tuck details to the rear shoulders. I think there are elements of an earlier (possibly 20s) dress which have been cleverly adapted in the 1930s so whilst not in its original form is correct for the later decade! Neckline has been altered with satin band added, waistline raised, and the side seams adjusted for a more fitted look. Kick pleats have been