Striking dress! And I'm going to agree 80s, but I think it is very late in the 80s. I was shopping for wedding gowns in 1990, and both the shape of your dress's skirt and its tulip hemline, along with those tulle "puffs" with wired edges were featured in several styles. The reason I remember so well is that it came down to 2 gowns, one a sleek, fitted one with that same skirt line, the other a more traditional gown with a similar neckline and the same shoulder treatment. The one with the shoulders was the past season's (only reason I could afford it--LOL!), so that would put it at summer/spring of 1989, but the other one was current. By the time I started working at a bridal shop in 1992, the puffed tulle shoulders had been tamed significantly, but you still saw some variations on that skirt design.
(I think I still have the photos of those 2 dresses; if I can find, I'll post.)