This is a sheer shirt from COMME CA ISM. The size is S, but it doesn't seem overly tight. Please check the photos for the width and length. It has been worn a few times and then stored at home. Since it's a sheer material, an undershirt is required. There may be oversights, so please comment before purchasing if you have any concerns. I will upload additional photos! It's lightweight and perfect for the office. I will fold it compactly for shipping. Please consider this and the possibility of wrinkles when making your purchase.