For the ladies: Underclub Step away from those semiannual sale bins, and fill out this service's questionnaire. Tell them your size (including any gripes you have about fit) and style preferences (sleek and sexy vs. clean and classic). Then choose a subscription option--$21 for one pair of undies that can be delivered monthly, bi-monthly or quarterly. Underclub offers big names like Cosabella, Commando and Natori, but it also works with up-and-coming designers.
For the gents: BirdBriefs Apparently men don't update their undies even though they know they should, says the founder of this service. To keep things simple, the only option (for now, at least) is black boxer briefs. Choose from three different subscriptions, all delivered quarterly: the Executive level ships two new pairs ($24), the Business level four pairs ($30) and the First Class level six pairs ($36).