What is work appropriate attire for business meetings?

I am just wondering if anyone has noticed that people just don't dress appropriately for work anymore unless there is a dress code? The 2 things that annoy me the most are stiletto heels, yes we know that you are short but you can find high heeled shoes that aren't patten leather and aren't a stiletto, I just don't get it. The other peeve is low cut shirts, yes we know you have huge boobs but we don't want to see them or perhaps we would if you would at least strap those suckers down and wear a bra that has a bit more support.