It's also interesting that you wouldn't see a guy (other than a rock star or bartender) going to work in the type of outfit I described. Why? Because men expect to be taken seriously for what they have to contribute as an employee: their brains, their education and training, their ideas. I'd encourage women to strive for the same.
I find it odd that you are assuming that OPs wife is showing up in the sort of inappropriate attire you describe above. He said quite clearly that she didn't dress like a slvt, just that maybe she could try harder to cover up.
This, as you are already well aware, difficult for a woman with large breasts. You can wear a turtleneck and a blazer, and still some people will be noticing your breasts, and refusing to take your seriously for your education, brains, and competence.
At my work, I would say the majority of guys are quite able to remain professional, to focus on the job, rather than on a woman's boobs, and to refrain from propositioning their co-workers or making inappropriate comments. Then there are those who can't, and I really don't understand why we should be making excuses for them or bending over backwards to accommodate their lack of self control.
Everybody has the responsibility of remaining professional in the workplace and should not be foisting that responsibility onto someone else.
As for dress code, it varies from place to place. In the article posted earlier, the guy was working with Olympic athletes who routinely wear sports bras and shorty shorts as their professional attire. Does that excuse his harassment of them? Not in the slightest, IMHO.
Intheory, as I said earlier, I totally get that women are expected to take responsibility for men's sexuality. But I don't see it as reasonable or fair. And the same would be true if you were to reverse the sexes. In your example, I *would* hold the women accountable for not being able to keep it in their pants.