noun

a set of clothes in a style typical of a particular country or historical period.

authentic Elizabethan costumes

outfit,ensemble,suit,dress,clothing,attire,garb,uniform,livery,array,regalia,clothes,garments,robes,get-up,gear,togs,garms,duds,glad rags,clobber,kit,strip,rig-out,threads,apparel,raiment,habiliments,vestments,vesture,habit

verb

dress (someone) in a particular set of clothes.

the dolls are elaborately costumed in fancy nineteenth-century dresses