Some of my own rules I now break as I get closer to 50 and dress more casually;

cut away collars - I like them better than a Kent collar sans tie.  Don't have to always wear a button down.

low rise slim dress trousers - OK for dress shirt and sweater combo.

French cuff shirt - Now Ok with a SJ.  When else can I wear my cufflinks.  This was previously one of my most hated looks.

SJ and jeans - Easy when I am lazy and tired of people asking if I am going to a funeral.

For others I am no longer bothered what they wear as long as they appear to have put forth some effort to look presentable. Just wish people would clean their shoes.  Still my biggest pet peeve.

Not everybody shares our developed concern about personal style or has the money to indulge themselves in nice gear. So I generally try to avoid judging anyone by what they wear - with the exception of members of criminal biker gangs or extreme political organisations plus (as above) clothing with offensive wording on it. People who wear this stuff are usually hohos.

However there some faux pas that make me sigh inside when I see them:

-Middle aged mods with monkey jackets, parkas, targets etc.
-I don't mind low key tassel loafers but don't like ones with frilly bits (kilties?)
-Short sleeve shirts, worn with suit, collar and tie. This look seems to be favoured at my head office and is worn winter and summer, so it's nothing to do with warm weather. They think it makes them look more dynamic and ready to crack on with lots of important work and decision making.
-Wearing zip up thermal liners under sports jackets instead of doing the right thing and putting a coat on.
-Grey shoes of virtually any sort.
-Oversized watches
-Loud shiny ties
-People wearing sweat pants with normal i.e. non sports clothing. These are usually bum shufflers who spend their lives shuffling around shopping centres and other places of public resort, carrying cups of coffee and getting in the way of proper people.

Actually, this all ready as if finally people woke up and now follow my leadership.

We are your zombie slaves Beeston.

I had no idea brown were so controversial.

I challenge you to show a pic - from anywhere, other forums, bogs, whatever - with a brown corduroy suit which makes a regular person (not a profesisonal model)  look good.