fancy dress

US /ˌfæn.si ˈdres/
UK /ˌfæn.si ˈdres/
"fancy dress" picture
1.

маскарадный костюм, карнавальный костюм

clothes worn for a party where everyone dresses as a particular type of character or thing

:
She wore a fairy costume to the fancy dress party.
Она надела костюм феи на маскарадную вечеринку.
The theme of the party is fancy dress from the 80s.
Тема вечеринки — маскарадные костюмы 80-х.