Mori Kei, also known as Mori Girl, is a Japanese street fashion that originated in Harajuku. It is inspired by a forest lifestyle and is characterized by loose, light, and airy clothing, layered with warm, bulky sweaters. The key to the Mori Kei style is to look natural and earthy, with earth color tones like russet, taupe, ecru, tan, brown, or colors in nature like green, soft pink, yellow, white, or the colors of unbleached linen being popular. Other features of Mori Kei outfits include:

• Multi-layers of skirts/shirts to achieve a loose and slightly billowy shape
• Baggy/loose wear to hide the body shape and look relaxed
• Ruffled or asymmetrical hemlines, Peter Pan collars, lace, ruffles, and cotton
• Handmade, recycled, organic textures, and natural fibers

Mori Kei outfits often appear to be handmade, recycled, and well-loved, with a flair for the organic and asymmetrical. The style is anti-fashion, anti-materialistic, and rejects all luxury decorations, focusing on naturalness, simplicity, comfort, and practicality. The popular MUJI trend in recent years can also be classified as a kind of evolution of the Mori Kei.