This is very seldom worn except by flag officers or those in the diplomatic corps. When required, white tie is worn to evening dances, weddings, dinners, receptions, and on state occasions.
Ladies wear very formal evening gowns.
Civilian ladies wear dresses appropriate to the occasion as styles dictate. Ladies wear formal evening gowns. For Occasions of State, Ceremonies, and Solemnities, parades and reviews, military personnel participating wear the seasonally appropriate ceremonial uniform. In general, guests wear the seasomdly appropriate Service Uniform. Civilian men generally wear business suits and ladies wear a dress appropriate to the occasion, as styles dictate.