A shirt, button shirt, dress shirt, button-front, button-front shirt, or button-up shirt is a garment with a collar, and a full-length opening at the front from the collar to the hem. While traditionally dress shirts were worn by men (while women wore blouses or chemises), in the mid-1800s it also became an item of women's clothing and is worn by both sexes today. The front opening is fastened usingbuttons or studs. Shirts are normally made from woven cloth, and are often accompanied by a jacket and tie, for example with a suit orformalwear, but shirts are also worn more casually. In British English, dress shirt means specifically the more formal evening garment worn with black- or white- tie, also discussed below. Some of these formal shirts have stiff fronts and detachable collars attached with collar studs. The term "button-down" (which refers a type of shirt which has a collar fastened down by buttons) is sometimes used in error to apply to all shirts (with or without buttoned down collars), being used as a synonym for "button-up" or "button-front".