
The ceremonies that gave rise to Shichigosan have been held since ancient times all over Japan, but
the ceremonies that lead to the current Shichigosan are thought to have begun in the 17th century as prayers for the health of the eldest son of the fifth shogun, Tsunayoshi. Originally, boys and girls were to perform the "Kamioki no Gi" (hair-laying ceremony) at the age of three (according to the Japanese age reckoning system), boys the "Hakama Gi" (hakama ceremony) at the age of five, and girls the "Obi-Hiki no Gi" (sash-untying ceremony) at the age of seven, but nowadays they are often held at the child's full age.
About the date
The Shichi-Go-San festival was often held on November 15th of the lunar calendar, but nowadays it is often held on a November holiday. The origin of the date is unclear, but it is thought to have been held on November 15th of the lunar calendar, the first full moon after the rice harvest.
About girls' clothing

For three-year-old girls, this ceremony is called "Kamioki no Gi." They wear
a kimono with a hekoobi (belt) , a sleeveless coat called a hifu (cloth), tabi socks and sandals, and a drawstring bag. We recommend using a tsumami kanzashi (hairpin). Since the hair is not yet long or thick enough, we recommend a type that can be inserted with a hairpin to avoid damaging the hair.

Seven-year-old girls go through a ceremony called the "Obi-Hakki no Gi" (Untied Belt Ceremony), where they tie their obi sash for the first time in the same way as adults. Dressing is almost the same as for adults, with the full-length furisode kimono adjusted at the shoulders and waist (adjusting an adult kimono so that it can be worn by a child). For hair, we also recommend using a tsumami kanzashi (hairpin). By the age of seven, the hair will have grown to the same length and thickness as an adult, so it's a good idea to combine multiple kanzashi or a single kanzashi. Enjoy a wonderful Shichi-Go-San celebration with beautifully decorated hair for both the shrine visit and photo shoot.
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