Stacy Smallwood is passionate about fashion. As owner and head buyer of Hampden Clothing, an upscale women’s boutique in Charleston, S.C., Smallwood travels regularly to Paris, New York, Milan and London, where she buys the most up-to-date stylish clothing and accessories for not only her store but also herself. Over time — call it an occupational hazard — she has acquired a lot of clothes. As a result, her home closet — an extra bedroom she had transformed into a large walk-in — was a disaster, nothing like the sleek, well-edited and organized shelves and displays in her fashionable King Street shop.