It's sweater weather....kinda! Imagine your travel plans from the East Coast to the south for a weekend wedding, or an evening outing with the fellas to do 'man cave' stuff - plan on starting with a good sweater and then layer from there. This Japanese brand Beams Plus does staples really well. The cut is generally slim and the quality is top-notch.
A t-shirt underneath for a casual outing or a buttondown for a night out with your girl works well, or layer a vest on top for added dapperness and warmth. My recommendation is to start with something print and stripes count!