This is a very pretty and sophisticated spring and summer dress from St. John. She's very cute worn alone or under a white shirt and paired with a hat and heels or flats! I don't know the fabric content or exact size; the fabric is stretchy and fit me from size 4 to 6 quite nicely; my mannequin is a size 6. Zipper closure in back. This is a great vacation piece - it never wrinkles and doesn't take up any room in a suitcase! Perfect for resort, cruise, sightseeing, shopping, day trips, cute lunches, brunch! Shipped with care from a smoke-free home.