That's the answer. At some point in our career, most of us end up wearing some kind of "uniform."
I used to work for a engineering consulting firm. Kevin, the star engineer would wear polo shirts, blue jeans, and sneakers. Everyone one else at his level and above wore suit and tie.
One day the new boss told Kevin that he needed to wear a button down shirt, suit and tie to meet with the client. Kevin told him "You can't make me wear a suit and tie. My clients don't care what I wear." The simple moral of the story was clear: "if you make it rain, you make the rules."
OTOH, he wore jeans, sneakers, and a polo shirt every day. He was hardly a rebel.