Answer (1 of 5): Maybe part of the reason is because she feels comfortable wearing those, and that she might also have some particular concerns about not wearing anything underneath her skirts besides perhaps underwear of that. Additionally, it can also depend on her age and her peers as well has
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How come do I always see tight black shorts under girls skirts and dresses? - Quora
How come do I always see tight black shorts under girls skirts and dresses? - Quora
Using levels of mesh mapped to your body, you get ventilation where you need it, plus the comfort of fewer seams. It's pretty much the most
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How come do I always see tight black shorts under girls skirts and dresses? - Quora
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Why do larger women wear spandex in public? - Quora