TW- CONTROVERSIAL

I still don't understand why we can see the "sneak peak"the some loli characters underwear?/shorts?/bloomers?. When I started genshin and looked at Klee I felt wierd like, isn't that in underwear. I thought they are just shorts but then I saw nahida and the same design like Klee I was really confused like why we are seeing kids underwear like it's nothing. I am not familirized with western culture, as far as I know bloomers are Victorian stuffs. I might get hate may called out a pedo for looking but just want to get of this of my chest