Stag, that's what I was sort of trying to get at, in a roundabout way. I think it's perfectly fine to coach dressing for a role (because, biases, impressions, etc. are powerful elements that anyone, cerebral or not, needs to understand to make their way in the world). I get a bit squidgy about mandating dress, personally, although I may be in the minority there. I am seriously curious what we think would happen if we didn't implement a dress code.
And an aside; at my husband's work, they mandate a dress code/uniform for the "techs" but not the PMs or sales folks. The message sent to the techs was that they were not trusted to be able to dress presentably and therefore were "lesser than" the other office-based roles. So dress code can be a weapon, too.