Worn only once, for a short period. ⚪︎ Black buttons are used except for the buttons around the neck, and the black buttons are hidden when worn. ⚪︎ Although difficult to see, the collarbone area and the shoulder width of the back are shirred with elastic. ⚪︎ It's a size M, but there's plenty of room around the chest. ⚪︎ The sleeves have gathers. Shoulder width: 34.0 Chest: 57.0 Length: 61.0 Arm circumference: 13.5