Yuki Onna is a snow demon in the manga & anime Nurarihyon no Mago (Nura: Rise of the Yokai Clan).
In demon form, she wears a white kimono with very long sleeves (longer than a furisode), a white obi and a white scarf (in the manga, the scarf has a zigzag pattern throughout, but it’s solid in the anime). One of her weapons is a naginata formed of ice.
For Kayle’s cosplay, we decided to err from tradition and use a shiny satin (more icy and much cheaper than the silk used in traditional kimono) that we purchased from a local fabric store. The “snowflakes” are hand painted on. Her obi was a bit harder, since locating thicker fabric in solid white is more difficult to locate. But I found some at a fabric wholesaler in Dallas. Luckily, the fabric was 60” long, so I only needed to add a few more feet to make it obi length. The finished obi is about 15’ long. The obijime is cording purchased at a local fabric store. The long scarf is velour. Shoes are white geta with white tabi socks.
Her naginata is insulation foam and cardboard. The cardboard roll is from a fabric purchase. The foam was trimmed to look like several images from the anime and painted.