Transitional weather asks a lot of an outfit. A cool morning can become a warm afternoon, while wind or rain changes what feels comfortable. The simplest answer is a set of layers that can be added or removed without rebuilding the whole look.
Think in functions
Start with a comfortable base such as a T-shirt or light shirt. Add a mid-layer for warmth, perhaps a fine knit or an overshirt, and finish with a jacket suited to the forecast. Outdoor retailer REI describes a similar functional approach for outdoor activities: a base, insulating layer and weather-protective shell. Everyday dressing can borrow the idea without requiring technical gear.
Keep movement in mind
Try the layers together before leaving home. You should be able to bend your arms and close the outer layer without bunching. If a shirt sleeve feels bulky beneath a close-fitting jacket, choose a thinner middle layer or a roomier coat. Varying lengths can also help each piece read clearly.
Make it practical
Check the weather, your plans and how much you want to carry. A light scarf or removable cardigan may be enough on a mild day; rain and prolonged outdoor exposure call for appropriate protection. Put comfort first and treat colour and proportions as opportunities to make the combination your own.