Sometimes staying warm and cozy turns into a distinctly un-stylish endeavor, but this doesn’t have to be the case.  From the best pull-overs to Michelle Obama-style cardigans, we’re figuring out all the best woolly layers to keep you toasty and fashionable at the same time.  Keep things chic with a long, lean cardigan, or go trendy with a cropped, boxy sweater.  No matter what, we’ve found the most stylish sweaters for fall, so look no farther for the best picks to keep you warm.