Fuku

I think that since the Sailor Senshi of the Sol System have Sailor fuku similar to school uniforms, then the Sailor Starlight's fuku are similar to their planet's school uniforms.^_^

Mankichi attends a middle school in a small village, which has gakuran for guys and fukus for girls. - https://official-tropes.fandom.com/wiki/Sailor_Fuku

The moisture wicking is excellent, which is great for wearing fuku to hot Texas summer cons. - https://thegeekyseamstress.com/2019/06/14/costume-notes-sailor-pluto-3-0/

Oh the joys of wearing fuku in public. - https://cosplay.com/index.php/s/3n65bmjw9

Recently Dr. Sze¹ has described many species from Shihpanwan, 110 li west of Fuku Hsien (府谷縣), North Shensi.

But things differed in Fuku County, Shensi Province. Located on the loess plateau, the county is full of barren hills, and therefore it is very difficult to develop production.