costume

noun

the attire worn in a play or at a fancy dress ball
“We won the prize for best costume.”
the attire characteristic of a country or a time or a social class
“They wore their national costume to the social event.”
unusual or period attire not characteristic of or appropriate to the time and place
“In spite of the heat, the child insisted on wearing a woollen costume.”
the prevalent fashion of dress (including accessories and hair style as well as garments)

verb