Transitioning into autumn is a cinch if you adhere to the rules of layering.  If you’re heading to an outdoor event as the Summer heat wanes, you’re going to need a cover-up to keep the crisp chill Fall air at bay.  The brown plaid By Malene Birger Sienna Cape is going to be a closet staple this Fall because of its versatility. Throw it on top of a skirt, denim jeans or work trousers for an instant vamp in style.  Heading to an outdoor barbecue festival? Pair the cape with chocolate corduroy skinny jeans, a cream shirt and lace-up wedge booties.  Accessorize with gold and touches of orange for a classic British fall look.