Any of the liturgical garments worn by sacred ministers or servers at mass. These include:
Chasuble - worn by the celebrant (over alb, maniple, and stole)
Dalmatic - worn by the deacon (over alb and stole)
Tunicle - worn by the acolyte (over alb)
Cassock and surplice - worn by servers
Vestments for the sacred ministers (celebrant, deacon, acolyte) are in the liturgical color appropriate to the day or season.