High Quality Content by WIKIPEDIA articles! A rochet is a white vestment generally worn by a Roman Catholic or Anglican Bishop in choir dress. It is unknown in the Eastern Churches. The rochet is similar to a surplice, except that the sleeves are narrower. In the Roman Catholic tradition, the rochet comes below the knee and its sleeves and hem are sometimes made of lace; in the Anglican tradition, the rochet comes down almost to the hem of the cassock and its sleeves are gathered at the wrist.