junihitoe
Wikipedia
The jūnihitoe (十二単, lit. 'twelve layers'), is a style of formal court dress first worn in the Heian period by noble women and ladies-in-waiting at the Japanese Imperial Court.
The junihitoe was composed of a number of kimono-like robes, layered on top of each other, with the outer robes cut both larger and thinner to reveal the layered garments underneath.