DELETE

Nah, there will be some people attached to these things but fuck them. In my opinion you just have to be well polished and look the part, it doesn't matter if you do it wearing a Hermes tie.

If you had a time machine and were looking to enter the industry in the 80's/90's, maybe this would be a thing.  Dress neatly with nothing too-fashion forward / backward and no-one will give a f**k if you bought your clothes at a thrift shop or Gieves & Hawkes.  Esp. as a junior.

i dress like shit and nobody cares. Just be chill and do the work 

Nobody cares provided you don't look sloppy. And a bit off a nerdy note...you can get much much better ties than Hermes for the money. Even Kiton, Attolini, Isaia, etc... ties are on sales around $70 - $100. All of those will destroy anything Hermes makes (which is all overpriced garbage).

Dress conservative, clean, buy clothes that are in your price range and be a simple hardworking person. All this extra fashion stuff is irrelevant.

In my opinion, the price tag does not matter. What you do need is to look professional and presentable. Others may be obsessed with materialistic items and flashy products but I would much rather use my money in ways that would increase my wealth.

Warren Buffet once said :"I buy expensive suits, they just look cheap on me."  The billionaire lives a very frugal lifestyle and doesn’t dress, act or look like the rich man he is.

Very few people can actually distinguish between good clothes and expensive ones. Especially if it is a 100% cotton shirt.
It is a bit easier to spot on shoes (cheap shoes can be recognized), or coats.

As a more junior colleague though, nobody would care or expect you to spend a lot. Take care of a good fit, corporate color combination (if that even exists), and that you can combine as many items as possible.