LOOK FOR… Coats with defined shoulders, including slight padding and perhaps some details, like the epaulets on Rachel McAdams'smilitary-style coat.
AVOID… Dropped or raglan sleeves and unstructured styles that allow the fabric to fall at your natural shoulder line.
DON'T FORGET… Wide necklines and lapels are flattering. Keep the bottom half of the coat slim. Belt to emphasize your waist and focus the attention away from your top. Double-breasted versions work.