Prada’s East Hampton digs are worth a visit for the dramatic store design alone. RSVP ([email protected]) for the Loupe’s fine jewelry pop up at the Reform Club from August 12-21. Mediterranean lifestyle boutique Via Coquina curates exquisite items from Greece to Capri. Southampton’s Nordstrom Local addresses sartorial needs through September 7. Load up on coffee-table tomes at Taschen’s East Hampton book nook. 2 Newtown Lane, East Hampton, N.Y., 11937. 23 Windmill Lane, Amagansett, N.Y., 11930. 26 Madison Street, Sag Harbor, N.Y., 11963. 395 County Road 39A, Suite 9, Southampton, N.Y., 11968. 26 Park Place, East Hampton, N.Y., 11937.