Soho. Madison Avenue. Carnegie Hill? As far as shopping districts go in the Big Apple, Carnegie Hill — from 86th to 96th streets between Central Park and Lexington Avenue — isn’t exactly on top of everyone’s list. But the neighborhood does have a few retail gems worth boasting about, like Phoebe Cates Kline’s Blue Tree boutique. Now, there’s a new addition: the month-old Edit, at 1368 Lexington Ave. With a roster of designers ranging from Marchesa and Martin Grant to jewelers Temple St. Clair and Irene Neuwirth, owners Alissa Emerson and Valerie Felgen aim to rekindle the old salon-shopping experience with delivery, after-hours service and private shopping by appointment. The 2,500-square-foot, bi-level store is modeled to look like a townhouse, complete with a grand curved staircase, a patio out back and, to the delight of husbands and boyfriends recruited to shop, a “living room” with a working fireplace, bar and flat-screen television.