Pontifical vestments, also referred to as episcopal vestments or pontificals, are the liturgical vestments worn by bishops (and by concession some other prelates) in the Roman Catholic, Eastern Orthodox, Eastern Catholic, Anglican, and some Lutheran churches, in addition to the usual priestly vestments for the celebration of the Mass and the other sacraments. The pontifical vestments are only worn when celebrating or presiding over liturgical functions and should not be confused with choir dress, which is worn when attending liturgical functions but not celebrating or presiding.