attire
at-tire
noun
Clothing, especially formal or elaborate garments worn for a specific occasion.
"Formal attire is required for the event."
verb
To dress someone or oneself in particular, often formal, clothes.
"She was attired in a stunning blue dress."
Thesaurus
Synonyms: dress, garb, fancy up, deck out, deck up, dress up, fig up, gussy up, get up, rig out, prink, tog up
Antonyms: dress down, underdress