This waistcoat is a professional & distinguished uniform piece, it can be worn buttoned for formal occasions, or left undone for a casual look depending on your venue requirement. Very chic and elegant. Suitable for steampunk-themed, rock party, Halloween, fashion show, casual, costume, etc. I believe you'll be quite happy with the beautiful design and high quality. Measurement (in inches) International Size----------Chest Girth----------Waist Girth----------Shoulder Width----------Length XS---- Business Vest With Button Closure For Fall, Fall Business Vest With Button Closure, Business Vest With Buttons For Fall, Winter Workwear Vest With Buttons, Fitted Vest With Buttons And Lapel Collar, Fitted Vest With Lapel Collar For Fall, Winter Workwear Slim Fit Vest, Lapel Collar Vest With Buttons For Workwear, Fall Office Vest With Button Closure