<a href="https://en.wikipedia.org/wiki/en:Emperor_Akihito" class="extiw" title="w:en:Emperor Akihito">Emperor Akihito</a> wore the <i>sokutai</i> at the <a href="https://en.wikipedia.org/wiki/ja:%E5%8D%B3%E4%BD%8D%E3%81%AE%E7%A4%BC" class="extiw" title="w:ja:即位の礼">Ceremony of the Enthronement</a> on November, 1990.
Ministry of Foreign Affairs of Japan
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<a rel="nofollow" class="external text" href="http://www.mofa.go.jp/s_sa/sea2/ph/page3e_000441.html">Their Majesties Emperor Akihito and Empress Michiko of Japan ｜ Ministry of Foreign Affairs of Japan</a>