I dress fairly traditionally and conservatively and, despite periodically flirting with color, generally stick with classic black & white in the winter months. I just ordered the this dress from the Nordstrom Fall Sale and cannot wait for it to arrive. It will be the perfect holiday frock, as would each of the other dresses included above. Pop on some classic accessories (and opaque tights, as weather demands), and you are holiday party ready. Bonus points for being work-appropriate as well.