Justacorps
（重定向自Justaucorps）
![Luis Francisco de la Cerda (later Duke of Medinacelli) in a red justacorps with horizontal pockets and lavish decoration.](/Images/godic/202501/21/Medinacelli3602.jpg")
![William Feilding, 1st Earl of Denbigh wearing a Justacorps-like coat in 1634. His native servant wears a turban and sherwani.](/Images/godic/202501/21/1stEarlOfDenbigh3602.jpg")
A justacorps or justaucorps is a long, knee-length coat worn by men in the latter half of the 17th century, and throughout the 18th century. The garment is of French origin, and was introduced in England as a component of a three-piece ensemble, also consisting of breeches and a long vest or waistcoat. This ensemble served as the prototype of the modern-day three-piece suit. The fabric selection and styling of the justacorps varied throughout time periods, as fashions frequently altered.