"Finery" refers to clothing or accessories that are elaborate, fancy, or stylish, often worn for special occasions or to show off wealth or social status. Full definition
This room is all dressed up in its summer finery of color and pattern! (theinspiredroom.net)
From pubgoers in pajamas to merrymakers in finery at a fancy hotel, Americans are cheering and toasting the wedding of Meghan Markle and Prince Harry. (wnyt.com)
Emma is wearing trousers from Finery with a microdot print and her top from New Look has a dotty chiffon yoke. (overthehilda.ie)