Huhu... I have a little question! You can make clothes at Grandma, but somehow there are clothes that no one can wear!?
Grandma mostly makes clothes that other natives spawn in.
Elder Sister Native mostly makes clothes for herself.
What is the difference between a native girl and a native woman? And how do you recognize that?
Native girl and native boy are exactly what it says on the tin. Child versions of natives. They are DLC-only, because you do not want Mad Island stuff to happen to children. Well, you may want it, but Steam censors don't, and it seems that F95 moderation agrees.
Native boys share clothes with adult native men, but native girls have their own clothes. The clothes that "no one can wear" are probably for native girls.