Interesting question, I’m applying for 2021 so haven’t done tons yet. At the point where I’m a couple years out of college so I have fair amount of professional clothing, but also still a lot of more casual clothing from college. Right now I’ve realized I probably can hold off on buying any new ties, super fancy dress pants, etc since I’ll be in law school next year.
I think I will end up treating most law school classes like a casual Friday in the office... and then treat days I spend in library as ‘work from home Friday’. Big thing for me will be geography. If I end up in a warmer climate, I’ll probably start adding a lot more polo shirts.