fancy dress

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

kostüm, maskeli balo kıyafeti

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.
Kostüm partisine peri kostümü giydi.
The theme of the party is fancy dress from the 80s.
Partinin teması 80'lerden kostüm.