Lack luster fashion (sweats?) may have had a moment this year in each of our closets. But as we approach the festive span from Thanksgiving through New Year’s Eve — the crown jewel of holiday dress — it’s time to go all out by dolling up, getting giddy, splashing champagne, and ringing out 2012 with a bang. December is the one month in which sequins, satin, and other glittering touches become not only acceptable, but compulsory. So we’ve rounded up our favorites and styled them into a week’s worth of out-on-the-town looks, plus one more for good measure. You’ll make an entrance in Alice + Olivia’s silver-sequined dress, which is as subtle as an engine siren, but demure sleeves and a midi-length hem keep it posh. Or try Mango’s velvet floor-length skirt with a slit, worn with iridescent low heels for an unusual but arresting outfit. Even beyond New Year’s, after you’ve wiped off the mascara and confetti of 2012, these looks will still carry panache for any special nights out in 2013.