Wearing lingerie, much like dressing up as Sherlock Holmes and making yourself smell like a PlayStation, is an integral part of the seduction process. Take a step toward sexy with today's Groupon: for $25, you get $50 worth of lingerie and loungewear at Hope Chest in Haverford.

Hope Chest curates a trove of designer intimates that sensuously shelter curves and help to shape physiques. Boutique attendants measure figures to unite AA- to H-cup bras and band sizes ranging from 30 to 42 with their convex counterparts. Independent, multi-lingual panties, hose, camisoles, and shapewear are recruited from European and American lines such as Chantelle, Wolford, and Fleur't. With seamless underwire cups and front closures, Le Mystère's signature y-back bras modestly mask their structures ($60+). Organic-cotton Hanky Panky thongs ($18 for one, $48 for three) compete for seats with Cosabella hot pants and bikinis in games of musical chairs ($22+), and Spanx stockings and leggings sculpt and cinch below the belt ($26+). Pajama sets round out the collection with varying degrees of sultriness, as camisoles provide the missing link in the complex evolution of underwear to outerwear.