As for underwear, I find it odd that whenever a kunoichi's bra is mentioned in fanfic, it's usually something sexy or a t-shirt kind of bra, even on missions. Don't you think they'd be wearing sports bras? Especially the girls with bigger chests. I don't see any way Hinata could be running around on a mission in something that doesn't have that kind of support.

Heh, Hinata's lack of a suitable bra is actually the major plot point of one of my main fic's offshoot one-shots that I'm planning to write like I don't have enough to work on as it is--she's starting to be in a serious amount of discomfort because all her clothing (including her specially made, super-supportive bra) was trashed when Kabuto "rescued" her and bandage bindings aren't cutting it anymore.

Kabuto: You know, if the size is such a problem for you, I'd be more than happy to do something about it...

Hinata: O.O;;;