Later, Article 12 of Koshitsu Giseirei (the act that sets the ceremonies of the Imperial Court, crests of Imperial family, banners, seating arrangements in Imperial ceremonies, etc.) (Taisho 15 nen Koshitsurei Dai 7 go - No. 7 of the Imperial family's Act in 1926) enacted in 1926 defined that 'the crest of the emperor, grand empress dowager, queen mother, empress, crown prince, crown princess, son of the crown prince, and daughter of the crown prince shall be Jurokuyo-yaegiku-omotekikugata (eightfold Chrysanthemum with sixteen leaves facing up),' and Article 13 of the act officially specified as 'the crest of the Imperial Prince, Imperial Princess, Imperial or Royal princess, king, princess, and queen shall be Jushiyo-hitoe-urakiku (Chrysanthemum with onefold blossom facing down and fourteen leaves).'
その後、1926年（大正15年）に制定された皇室儀制令（大正15年皇室令第7号）第12条に「天皇太皇太后皇太后皇后皇太子皇太子妃皇太孫皇太孫妃ノ紋章ハ十六葉八重表菊形」と定められ、第13条に「親王親王妃内親王王王妃女王ノ紋章ハ十四葉一重裏菊形」と正式に定められている。