Blue collar? White collar? If you’re really good at what you do, your outfit shouldn’t affect your performance (unless said outfit is functional like an astronauts is).
For centuries, we’ve ascribed one’s societal standing with his/her dress. But that doesn’t really matter, does it? Certainly, looking clean and intentional matter but I couldn’t care less if a doctor wears a tie or a crew neck Rolling Stones tee shirt, so long as he doesn’t mess up my surgery.
Clothes are not symbols of success; success is the symbol of success and, what’s so cool about that is that you define what that is to you.
And that doesn’t mean I don’t like a nice tie every now and then. But I make the tie. It doesn’t make me.
Make integrity over appearance a priority.