Cap sleeves solve something specific. They give your arms coverage without weight, without bulk, and without the fussiness of a full sleeve that can feel wrong the moment the temperature climbs. On a maxi dress that combination becomes genuinely useful. You get the length for more formal occasions, the sleeve for the air conditioning, and a silhouette that reads as considered rather than accidental. We have been pulling together our favorite maxi dresses that wear this detail well because not all cap sleeves are equal. Some look limp and afterthought. The ones we care about sit properly on the shoulder, create a clean line, and hold their shape across a long day. These are dresses for weddings where you will be photographed repeatedly, for summer events that run from afternoon into evening, for any occasion that asks something of you and your wardrobe. The right cap sleeve maxi does not just cover the occasion. It rises to meet it.