The black dress, without the pearls-and-heels default
A plain black dress is a blank surface. The mistake is treating it as a finished outfit.
Built on: Any plain black dress — long sleeve, midi, no detailing.
Black absorbs everything, which is what makes a black dress so easy to wear and so easy to look unfinished in. There is no shape information, no colour, no texture. Whatever you add is the entire visual content of the outfit, and one small necklace is not enough content.
Two routes work and they do not mix. The first is a single large object — one substantial necklace, or one brooch high on the shoulder, and nothing else. Against black, a single piece reads as sculpture. The second is texture everywhere: a beaded bag, coloured tights, a heavy knit wrap, layered chains, letting the eye move around. What fails is the middle — a modest necklace, modest earrings, a plain black bag — which is the default most people land on and which looks like the dress was all there was time for.
Coloured tights are the highest-impact and least-expected addition here. Burgundy or bottle green under a black dress transforms it, and it is the one change that makes a summer black dress work in October.