[catshirt]

> Maybe her manager knows something or heard another manager make an off-hand comment about the dress code.

then they either have an unclear dress code which they enforce in an unprofessional and inconsistent manner, or two sexist managers.

> I would appreciate that advice so I can decide for myself whether to make a simple adjustment to my wardrobe.

dress in whatever makes you most comfortable (and abides by your company's dress code). if someone has something to say, they're kind of a dick. if someone has something to say they wouldn't say to the other gender, they're a sexist kind of a dick.