While the title of a Shinno (Imperial Prince) or Naishinno (Imperial Princess by birth) is put before the name as in 'Imperial Prince Fumihito' and considered to be a part of the name, the title of a Shinnohi (also Empress) is put both before and after the name as in 'Princess Kiko, the wife of the Imperial Prince Fumihito.'
親王・内親王の身位が「文仁親王」のように名の後に付され称呼の一部と見なされるのに対し、親王妃（及び王妃）は「文仁親王妃紀子」のように用いられる。