Actually, according to episode 7 they're all wearing pants that only look like panties.
What does that even mean??
Apparently it's the equivalent of putting boxer shorts over briefs.
It's quite clear from watching it that they're wearing only panties (or swimsuits in a couple of cases). However, they call them pants instead of panties. This seems likely to either be an attempt to make it seem somehow okay for girls to run around with no pants on, or it's a case of using the British meaning of the term pants (which is underwear) rather than the American one.
In the original Japanese, the word they use is zubon (trousers), so, by the standards of their world, they're properly clothed.
There are never-ending rumors as to whether or not Chuck Yeager endorses the show, hates the show, or is even aware of the show's existence, from various photoshops to Facebook encounters.
There is one witch that wears pants, but her historical counterpart went into battle without pants.
Hey, It's That Voice!: Viewers of Mai-HiME and Mai-Otome will likely recognize Saeko Chiba (Mio) as Natsuki Kuga, since she uses almost the exact same voice, along with several other famous actresses like Rie Tanaka (Suigintou) and Ami Koshimizu (Kallen).
In the same vein, some might recognize Nunnally from Lynnette's voice.
