>>9612511It's accurate to her appearance in Halo 5. You're missing the point entirely. To wit:
>>9612409Halo 5's (shitty, contrived) story had a rampant fragment of Cortana basically become a megalomaniacal galactic dictator, and her trim armored-looking avatar reflects this—she's ready to kick ass, and looks it. Contrast that with her appearance in Halo 4, where she's at her most vulnerable: she looks her most realistic and softest.