dressed to the nines
Definition from Wiktionary, the free dictionary
Unknown; first recorded in the late 1700s.
- (idiomatic) Very fancily or formally dressed; wearing very showy or splendid clothing.
- “Dressed to the nines” in Michael Quinion, Ballyhoo, Buckaroo, and Spuds: Ingenious Tales of Words and Their Origins, Washington, D.C.: Smithsonian Books in association with Penguin Books, 2004, ISBN 978-1-58834-219-5.
very fancily or formally dressed