That's quite a wardrobe for a destitute miko.

Twist: They're all made from the same outfit, just re-sewn and modified so that it at least looks like a different outfit.

djseifer said:

Twist: They're all made from the same outfit, just re-sewn and modified so that it at least looks like a different outfit.

Well she does have a personal (unpaid) tailor in Rinnosuke, so the idea isn't as farfetched as one might think.

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This and Marisa's one are super helpful in identifying their costumes!

Linked all of them (except Sangetsusei for which I couldn't find anything fitting) to official art from the touhou wiki along with some which were available here to make it even more convenient as a reference for Reimu's costumes. Will also do the same for Marisa's one and will probably move the images to media assets later just in case.

Edit - Moved to assets and linked posts when available