Jackets sit between a cardigan and a full coat — lighter outerwear for transitional weather, days that start cold and warm up, or simply adding structure to an otherwise casual outfit. Expect blazers, bombers, cropped styles and lightweight shackets across a mix of fabrics.

Because jackets are usually worn open as much as closed, the front-facing details — lapel shape, button placement, pocket style — tend to matter more here than in heavier outerwear. Structured blazer-style jackets read smarter; soft unstructured styles read more casual.

Wear a blazer over a dress for a more polished daytime look, or a cropped jacket over jeans and a tee for off-duty days. Jackets are one of the fastest ways to change the formality of an outfit without changing what's underneath.