The SoHo store departs from the traditional (if such a word can be applied) hot pink interior; instead its walls are sunny yellow with painted roses, and there's a bordello-red lounge area in back. Besides the quirkily printed dresses, available in all stores, there's a slinky upscale line. This is not the place for natural fibers -- it's ruled by rayon, stretch, and the occasional faux fur. Subway: R, W to Prince St. Other locations: 251 E. 60th St., between 2nd and 3rd Aves., Upper East Side, PHONE: 212/319-7699; Subway: N, R, W, 4, 5, 6 to 59th St./Lexington Ave. 248 Columbus Ave., between W. 71st and W. 72nd Sts., Upper West Side, PHONE: 212/362-3364; Subway: 1, 2, 3, 9 to 72nd St. 1060 Madison Ave., between E. 80th and E. 81st Sts., Upper East Side, PHONE: 212/734-1257; Subway: 6 to 77th St.