What's the name of this dress? (of Japan)

Witches (unorthodox witches) who generally work in shrines mainly wear white kimono underwear.

Witch clothes

ぃ) 【 White kimono coat 】, Fei (ひばかま) 【 Red kimono skirt 】 3 pieces. Wear white foot bags [white kimono socks] and red sandals. If the hair is long, the back hair must be wrapped in white sandalwood paper and tied with twine. The work of working witches is basically responsible for cleaning shrines and communities, repairing painted horses [when praying, write down your wishes on painted horses and hang them in the special place where painted horses are hung in shrines], selling amulets and so on. Sometimes dancing with the gods (usually the duty of witches) [Divine music dancing refers to praying in God's place. Hold the Kagerah clock (かぐらすず) [a * * * has 12 clocks, and the upper, middle and lower floors have 3, 4 and 5 clocks respectively. There are five colors of ribbons (green, yellow, red, white and blue) on the back of the handle, which are indispensable props when dancing with God. Formal witches will wear different clothes from working witches. Thousands of algae (ちはや) [white kimono coat, printed with various patterns, different according to different grades and levels, the most common is the crane pine pattern], wearing a flower hairpin and a gold crown on his head. Besides dancing, I also want to help manage social affairs. Most of the people I saw at the harmonious wedding were witches in this costume.