Sequin Leggings & Chic Boots
If you live in a cold country like I do, then it would be probably better to cover yourself up. A thight or pumps are possible but I really doubt that they would be enough to keep you warm. Now sequin leggings and chic boots on the other side are a good garment to keep you warm and most importanty, they're very stylish. Just be careful not to look too casual.
Deep Colored Dress
Allthough sequins and metallic colors are must haves for the end of the year period, dressing up in a simple one color dress can be an eye-catcher as well. Try colors like dark purple, red, blue, or green. Use solid colors and add dramatic accessories to add the spark in your outfit.
Flats or Heels?
This can be a tricky choice, but it all depends on your outfit. I normally would rather go out (everywhere) with flats. Sorry but I like comfort, and especially when I'm planning to go all out. One thing I´ve learned from watching Jersey Shore is that heels and alcohol are dangerous combination. Now pulling off flats for a party can be really tricky, but instead of stilletos or flats you can try block heels, wedges, or 3.5/4 inch heels.