N-UNCOUNT [oft NOUN n]化装舞会服装Fancy dress is clothing that you wear for a party at which everyone tries to look like a famous person or a person from a story, from history, or from a particular profession. 化装舞会服装
Guests were told to come in fancy dress.
客人们被告知要身穿化装舞会服装前来。
He turned up at the fancy dress party as a footballer.