I'm going to the fancy dress party as Snow Queen, who are you going as?我要扮成白雪女王去参加化装舞会，你要打扮成谁呢?He turned up at the fancy dress party as a footballer.他扮成足球运动员出现在化装舞会上。I'm quite keen on the idea of having a fancy dress party.我对开化装舞会这个主意很感兴趣。You're invited to a fancy dress party.敬请参加化装晚会。