be dressed (up) to the nines

To be very well-dressed and fashionable, typically for a formal event. I have to be dressed to the nines at this gala tonight—a lot of important people will be there. The whole family will be dressed up to the nines at the wedding, I'll make sure of it.

Common Names:

Name	Pronounced	Usage
ÉVelyne	-	French
Sorrel	SAWR-əl	English (Rare)
Erramun	-	Basque
DuŠAna	-	Czech, Serbian, Croatian, Slovak
Erastus	i-RAS-təs (English)	Biblical, Biblical Latin
Valentina	vah-len-TEE-nah (Italian), vah-lyen-TEE-nah (Russian), vah-leen-TEE-nah (Russian)	Italian, Russian, Slovene, Croatian, Macedonian, Romanian, Spanish, Ancient Roman