Cotton earns its place in the black dress category because it actually does something. It breathes. It washes. It holds its shape through a long day in a way that polyester simply refuses to. We are deeply committed to the idea that a black dress should work harder than just looking good on a hanger, and cotton is the fabric that makes that possible. The casual version you can wear to a Saturday market and the slightly crisper version that handles a dinner reservation without looking like you tried too hard. Both exist here. We have pulled together our favourite black cotton dresses across cuts and occasions because this is genuinely one of the most useful things a wardrobe can contain. Not as a fallback. Not as the dress you wear when you cannot think of anything else. As a deliberate choice you feel good about. The quality of the cotton matters, the weight of it, the way it moves or sits close depending on the cut. These are the ones that justify every centimetre of wardrobe space they take up. A black cotton dress done properly is never an afterthought.