20 Main and its sister store up the street, Nell, offer the clean-cut and high-end shoppers of Edgartown a world of options. Located at the same address, near the lower end of Main street nearest to Katama bay, 20 Main is a relatively large store for this area. With white-washed walls, lots of windows and hardwood floors, this store is basic and neat, letting the wardrobe shine on its own.