I understand your dilemma. I have worked in IT for over 35 years. My first job required a a blue or gray suit with nylons and pumps. I ******* hated it. My last few jobs were business casual. I wear khakis with button down shirt or polos. But the last interviews I wore a pants suit and felt more comfortable.

I would rather wear jeans, t-shirts or polos, but a lot of corporate America frowns upon it.