“制服” means “uniforms,” and JK is short for the Japanese words “joshi koukousei” (girl students in high schools). Therefore, this term coined by Chinese netizens refers to schoolgirl outfits inspired by Japanese high school uniforms. A set of “JK uniforms” normally includes a cute pleated skirt, normally high waist and often in plaid patterns, a short-sleeved shirt with a bowtie matching the skirt for summer. The uniforms will include a long-sleeved shirt, waistcoat and coat for other seasons. JK uniforms are commonly seen in Japanese comics and have become increasingly popular in China as a cute casual daily outfit.
Nǐ zuótiān fā de péngyǒuquān，zhàopiān zhōng de xiǎojiějiě shì shuí ya？
Who’s the girl in that photo you shared on WeChat Moments yesterday?
Nǐ shuō de shì chuān JK zhìfú de nǚshēng ma？Tā shì wǒ de xiǎoxué tóngxué。
Are you talking about the girl in JK uniforms? She’s my primary school classmate.
Tā zhǎng de zhēn měi。
She’s very pretty.