Shopping for spring-fashion essentials at Manhattan prices ain't easy, but Housing Works' city-wide shopping extravaganza eases the pain with discounts on designers like Diane von Furstenberg and Costume National plus a charitable receipt. Every penny you spend on your entry ticket and shabby-chic wardrobe goes directly to Housing Works, which provides housing, supportive services, and advocacy for the city's homeless men, women, and children suffering from HIV/AIDS.