I'm assuming polyester is merely a generic term for 'show clothes'.

It's been oh, about 16 years since I had to 'dress'...as in tie and slacks and jacket. I did it because it was expected, and I sometimes got sent by MY boss to his customers who would not have given be their attention otherwise.....the costume is part of the credentials.

Now, a funny story. My ex-boss was quite proper and formal (ex-Naval aviator) and well-dressed, but he had to go out and GET business for his computer consulting firm. He and the VP of the firm had an appointment in downtown DC to sell our services to a well established client, and they dressed UP for the occasion. When they were ushered in, he said he knew within 45 seconds that they would not get the job, as the potential clients dressed in suits at least twice as expensive as his. He was right...

I realize now that I would have NEVER risen very high in academia or business, as I just do not SEE past the minimal requirements. I can't tell a $200 suit from a $1000 suit....If I put ON a tie & jacket that is clean and not ragged, that should be enough to signal that I am at least aware of the basic rules and that my abilities should be all that counts after that...

   I have worn a suit only two or 3 times in 15 years, for, a friends wedding, my Mother's funeral..and maybe one other something...