Fancy ball

a ball in which porsons appear in fanciful dresses in imitation of the costumes of different persons and nations.

See also: Fancy

References in classic literature ?
Everybody was dressed for a Fancy Ball that was never to leave off.
He was driven on, and other carriages came whirling by in quick succession; the Minister, the State-Projector, the Farmer-General, the Doctor, the Lawyer, the Ecclesiastic, the Grand Opera, the Comedy, the whole Fancy Ball in a bright continuous flow, came whirling by.
Some of the Fancy Ball School in which art occasionally condescends to become a master, which would be best catalogued like the miscellaneous articles in a sale.
And cotton can be used as an adjective, as in get your "cotton-picking" hands off my fancy ball gown
While a car wash may be a little easier than a fancy ball, someone has to plan, advertise, and invite and thank everyone.
I got all the costumes: Batman, ghosts, 'sperm man,' gas masks, fancy ball masks.
She added that she does not understand how wearing a fancy ball gown would give rise to a lawsuit against her.
Moments later some fancy ball skills from Jake Edwards set up James McPike but his shot hit the post.
People think designing is just making fancy ball gowns.
In fact she'll be right at home in all the fancy ball gowns she'll be expected to wear in her role as Princess.
IF you are going to a wedding, party or fancy ball, then you want to look and feel the part - right down to your undies.
country dances only, and at the fancy ball on Tuesdays and Thursdays two