On each interview I've been on, there's been at least two or three women who are dressed in ways that would be considered inappropriate by the standards in this forum, but I have not seen anyone judge them, and for many it was not even their first interview, so they clearly knew how most people dressed for interviews. I tend to think that perhaps that is all they had, and I think it's wrong to judge them if that is the case (especially if their fashion faux pas are more benign and earnest seeming like a poor choice of color for the top/not very professional flats/wearing a cardigan instead of a suit jacket/wearing an unflattering suit/etc versus the more inappropriate for being just plainly not conservative enough like low cut shirts, short dresses or skirts, stilettos etc)
I think this thread is great for helping those with time and money to purchase appropriate clothing but in retrospect, this thread places much more emphasis on the interview attire than i think is necessary. Also I have noticed that I've been one of the only women in heels at all my interviews and have felt it off place because of it. Most women wore flats.