Tsunokakushi

The Tsunokakushi (角隠し) is a type of traditional headdress worn by brides in Shinto wedding ceremonies in Japan.

The tsunokakushi is typically made of white silk, matching the bride's formal kimono outfit.

[1][2][3] This derivation is listed in some sources as a reference to hiding a bride's "horns" of anger, jealousy, or other negative qualities, in order to present a more virtuous image for the wedding.

This specific headdress is described as arising in the Edo period as something worn by women when visiting a Buddhist temple.

This consisted of a triangular piece of material with one corner pointing straight up from the wearer's forehead, and 角 (tsuno, “horn”) referred to the peak of the triangle.