fancy dress

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

disfraz, traje de fantasía

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.
Ella usó un disfraz de hada para la fiesta de disfraces.
The theme of the party is fancy dress from the 80s.
El tema de la fiesta es disfraces de los años 80.