I have worked from home for over 20 years. I built my workshop on the back of my property and I have an office in my home. 99.99% of my business is "contactless".... they order it and I mail it to them after they pay electronically.
Having said that.... In my work-a-day life I generally can be found wearing shorts and a T-shirt, nothing fancy. If I'm going out somewhere, I can generally be found wearing nice cargo-shorts and a Polo shirt.
IIRC, although I own a very nice tailor-made suit for more formal functions (Tailor made because I'm very tall and nothing "off the rack" fits), there is not a "high-end" designer article of clothing in my closet(s).