New to Poshmark? Enter invite code withlove_b when you sign up for $10 off your first purchase J.CREW Size 20 Blue Defined Waist Knee-Length Classic Sheath Dress Condition: Good condition. Size: Size 20 Material: 100% Polyester Features: Defined waistline, Knee-length, Sleeveless design Measurements: See pictures. Tags: workwear, professional, versatile, elegant, timeless, sophisticated, polyester, lightweight, summer, spring, flattering, classic, minimalist, preppy