If you're looking for a thrifty option, Lanvin Fur Coat will fit the bill. Another strong contender for your wardrobe is Celine Vest. You may also want to look at this Ungaro Blazer. This item is not expensive, but it will make a difference in your wardrobe.
If you're gonna splurge, then what you're looking for is Parka. While you're at it, also have a look at Chanel Coat. Yes, this item is expensive, but it does not mean it's not worth it. Also take a look at Dolce & Gabbana Jacket.