fancy dress

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

travestimento, costume

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.
Ha indossato un costume da fata alla festa in maschera.
The theme of the party is fancy dress from the 80s.
Il tema della festa è il travestimento degli anni '80.