That Kawano really doesn't know how to dress for work. It must be because she's pretty that her boss lets it slide, because anywhere else and you'd get reprimanded. Even Su Luxia's outfit would get a comment from a superior at my place of work, due to that lace.
Since other workers in that place are dressed correctly, I must assume it's done on purpose and one of Su Luxia's plans will be to make a superior reprimand Kawano over her outfit.