My 2p worth.

The image you present is important, sure, but only to the audience you're interacting with.

Also, it depends om what message you're trying to put forward to that audience.

As people have said, if you are working at home dialled-in to your office, work naked if that's comfortable. (As long as you don't have a web cam, of course!)

If you are presenting a technical subject to technical people, you might dress in jeans and T - "I'm a techie just like you"

And so on.

The age of company dress codes must be on the way out, really.