Paula Varsalona   New York Magazine Pick   The Collection: Traditional simplicity. Full-skirted gowns are worn plain or embellished with two-tone fabrics, sea pearls, crystals, and European laces.   The Gown: Two-tone ball gown.   The Price: From $4,980.   Where to Buy: Gowns range from $1,000 to $20,000 and can be purchased at Paula Varsalona and Adrienne.