showy clothes; flashy outfit
Refers to clothing worn for show or to attract attention; the term is rare and may be encountered mainly in older texts or specific contexts.
He went to the festival wearing showy clothes.
Compound of 伊達 (だて, 'dandyism, showiness') and 着 (ぎ, 'clothing'). The exact historical derivation is uncertain, but it likely emerged as a term for ostentatious attire associated with dandyism.