In reply to OneLifeOneHeart: Obviously the more you are shaped like a woman the better the fit! I've got womens clothes off ebay before when they've been too cheap to pass up; mostly mid layers but also the odd pair of stockings. For extra insulation obviously.
You'll want to lengthen the sleeves and the back might be too short depending on the brand. If you get one with thumb loops the sleeves will be longer and you can just stitch up the holes and the sleeves will be the right length.