regalia /rɪˈɡeɪlɪə/

• 1. 

  N-UNCOUNT Regalia consists of all the traditional clothes and items that someone such as a king or a judge wears and carries on official occasions. (国王或法官等在正式场合穿的)盛装; 礼服

  例：

  ...officials in full regalia.

  ...全副盛装的官员们。