I just found the perfect little black dress for this winter. The
Laundry by Shelli Segal Ruffle Front Sweater Dress
is very comfy yet stylish and sophisticated, and it looks adorable with tall boots. The buttoned front and the subtle ruffle are a nice touch too, without being too overwhelming. And although it is made of 100% merino wool, the fabric is still soft, and that's important to me, since I am addicted to cashmere like no other.
This dress is available in lots of fffabulous colors, including black, cardamon, and teal. Just pick the color that matches your personality and skin tone (and eyes) best, and you're all set!
Note that because of its stretchy fabric, this dress runs a bit big, so get a size smaller than you usually get for dresses.