One problem remains, though: Between all the gift giving and party planning, we can barely keep our heads on straight, let alone find time to scroll through hundreds of Instagram posts. So to ensure that you win best dressed at every Christmas party and New Year’s Eve soirée on your December social calendar, we went ahead and did the work for you. From sequin skirts and oversized knits to slinky LBDs and rhinestone heels, there’s an Insta-approved ’fit for any and every occasion in the 31 looks ahead.