fancy dress
US /ˌfæn.si ˈdres/
UK /ˌfæn.si ˈdres/

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.