A little black dress is a workhorse, but it only works if the length matches your frame and your context. Short and structured is not a neutral choice; it is a statement that says you are comfortable being looked at. Frankies Bikinis' Moon Lace Mini Dress reads youthful and more playful than serious, while Solace London's Cora Mini Dress is sharper and more structured, with a square neckline doing most of the work. A mini with a detail, like a tassel or a lace overlay, feels less boring than one in plain jersey. Short black dresses work best on the legs and the confidence you actually have that night.

A longer black dress works differently than a short one; it becomes a neutral base for whatever jewellery or heel you want to feature that night. Khaite's Astor Dress in Black is the piece built to outlast trends, holding its shape without needing a single embellishment. Cult Gaia's Siena Gown reads formal without tipping into costume, which is the real test of a maxi. Midi length sits between the two extremes and works the hardest of the three, dressy enough for dinner but not so long that it looks overdone. It is the length for events where you are not sure what everyone else will be wearing.

A black shoe under a black dress needs to do something interesting, or the whole outfit reads flat from the ankle down. Tony Bianco's Zac Black Hi Shine solves this with shine alone, catching light in a way matte leather never will. Khaite's Colt 85 leather pumps work through silhouette instead, reading modern because of their shape rather than any finish. A perforated detail or an interesting heel does the same job, giving the eye something to land on. The shoe is where you signal that the outfit was considered, not just assembled in the dark.

A short black dress is for the night you want to show your legs and feel a little reckless about it. A longer black dress is for the night you want to feel elegant without trying very hard, and it will get worn again more times than either of you expect. Midi sits between the two and works for almost anyone, which is exactly why it gets chosen so often. Length matters more than any other decision in this category, more than fabric and far more than which label made it. A dull black shoe under a good black dress still reads boring, no matter how considered the dress itself is. Choose the length for the night you are actually having, then let the shoe do the work of finishing the outfit. If you want to keep browsing, I also put together The White Dress Every Occasion Actually Calls For and Burgundy Dress.