Hi- pics attached. The buttons are the only closures, I thought the little metal zig zag thing in the collar (presumably to make it stand up?) were interesting. Wondering about age, and what this style is called if anyone has any ideas
I actually have some of the collar supports for sale - the dress you have looks 1940s to me. The collar supporters could well be older and whoever made the dress used them to aid the "stand-up" collar look.