I've worn this formally about twice. It's a size 38, so I think it's around a Medium to Large. I've gained a little weight in my arms since I bought it, and it doesn't suit me anymore, so I'm selling it. It's a sleeveless top with a fluttering overlay, and I loved how elegant it looked. Thank you. Measurements (laid flat): Width (underarm to underarm): 49cm Length (neck to hem): 47cm Sleeve opening: 23cm Please forgive any slight discrepancies as these are amateur measurements. Shoulder width / Body width / Sleeve length / Length Body width: 49cm Length: 47cm Color: Navy Sleeve length: Sleeveless Season: Summer Stains, tears, odors, etc.: None