Rent the Runway has long since surpassed the level of little-known-secret — it reached the point of full-out phenomenon a while ago. And while we don't have the data to support it, we're willing to wager the site sees a lot of action for New Year's Eve. As such, we're here to remind you that now might be the best time to shop and reserve to make sure you get the party frock you're after . . . before it gets swiped by a swifter renter. From sophisticated black-tie to ready-to-rage, click through to see our recommendations.