"But then I don’t let myself get bothered about what other people choose to wear/behave at work. It isn’t a reflection on me in any way."
But many organisations do think that's why they have a dress code. I fact how your colleges conduct themselves can reflect on you, as another Staff member of that company.
For the person who said that they were on their way to Court, representing their company, that's really unusual, in fact, I've never seen it. The Job Center gives out Clothes payments, so people show more respect.
It's about showing underwear from my POV. There are times when it should be avoided. Every professional workplace, working with children/vulnerable people and Court are some. So it's unusual that a TA was allowed to wear one. Being dressed a certain way does instill confidence and respect.
My DD had to attend the Job Center yesterday, it was an Air Conditioned newish building. They were running at least 40 minuets behind on appointments. Coupled with how some of the Advisers were dressed, the whole thing just seemed like a piss take. You certainly couldn't have worn what they were wearing to a Job Interview, anywhere.
I think they are a No, for anyone customer facing. I've worn them when I've worked in non customer facing role, though.
I wore a cotton Kimono over a strapless dress yesterday and I was cooler than when I've been uncovered. Wearing less doesn't mean that you will be less hot, which I wish topless men would realise.