Judging by Suwako's attitude about the whole thing, she's not bothered. Otherwise, she would have said something different. Suwako might be a loli because she wants to be, seeing as she a goddess.
I think it's best not to wear anything at all.Don't group me in with the likes of you.Well, why not take this as an opportunity...Well you say that but...Your size wouldn't fit me anyway, right?...to try wearing normal underwear?*'choo!*Auu...Shut it, flatty.