大家都为这场party穿上了盛装
people dressed up for the party
大家
盛装
wear formal clothes (X)
costume（戏服）
（大家都为这场party穿上了盛装），很好看
people dressed up for the party， and it is really beautiful.
(从汉译英 后半句的时态 没有注意到 was)
everybody dressed up for the party and looked really nice
everybody dressed up for the party and looke*d* really nice
all people
all the people 所有的这些人
正装 formal wear dress formal wear
