jojifuku
Adults wearing nostalgic children's clothing such as kindergarten uniforms, randoseru, and brands such as Mezzo Piano. Considered to be a subcategory of the heisei retro style.
Derived from the hashtag "大人なのに女児服着てる" (otonananoni jojifuku ki teru) - "even though I'm an adult, I'm wearing girls' clothes".
This term is sometimes also used to refer to the heisei retro style in general - this tag is specifically for adults wearing children's clothing, however, and should not be used on pictures of children.