If you are looking for something a little different and on the black side, then Yoek has a wrap over jacket that looks like it would be great for hiding those ugly Christmas sweaters. It has an interesting triangular shape that looks like it would be conducive for layering over any sweater, ugly or otherwise. I like the long length too — perfect for winter leggings (like the ones at Re/Dress).
Yoek is not a bargain shop, this Netherlands boutique piece has a boutique price at $460 with the exchange but if you are looking for something different that no one else has this European brand may be up your alley.
* Pick up your wrap over jacket from Yoek