NEW YEAR, NEW GEAR: New beginnings also means new wardrobe additions. Tonight at the Gansevoort, fashionistas will find a rooftop shopping party at Plunge. The fiesta called MOD SHOP will have a variety of boutique owners and designers selling clothing, shoes and accessories for less. Find baubles from Dimpled and One Love as well as lots of trendy garbs from Electric Couture and Fashion District. The fete kicks off at 9 p.m. GET IT: Plunge at the Gansevoort South Beach, 2377 Collins Avenue, Miami Beach.