Measurements taken flat. Pit to pit: 19.5in, Shoulder to shoulder (back) 15in, Waist: 15in, Sleeve 26in. This top from & Other Stories features a collar, buttons, and sleeves that button. This is not a full length top, it's more cropped (comes to right above the hip) and has darts that taper in closer to the waist. This top is 100% rayon. Great top for fall!