Sequins -
For me, Christmas style is all about sparkle, and I love how sparkly sequins are! I would love to get a full sequin dress, like the blue on above, and wear it with black, opaque tights and black, platform heels.
Of course, for those who'd rather not clothe themselves in neck-to-knee glitter, there are plenty of gorgeous sequinned accessories, like that this beautiful red clutch.