I feel the need ... the need for tweed. God, that was awful, I'm sorry. But seriously, with fall weather comes my annual urges to adorn myself with tweed in every incarnation: dresses, pants, skirts, jackets, shoes. A touch of tweed will bring some dapper "Downton Abbey" vibes to your wardrobe, and as an added bonus, it's such a sturdy material that it usually lasts forever. Here are 12 tweed pieces I'm currently lusting after...