White shirts only, skirts/dresses that stay below the knees, stockings for the ladies, never pants for the ladies, clean shaven only (maybe a mustache is okay). Now some congregations object if your tie isn't wide enough.
They might as well have a uniform. It would be easier.
Here's one for the women:
As an elder, I wore animal ties. I would have a wolf or elephant on my tie or maybe dolphins. I would tame that the slightest bit when delivering a public talk and just go with a colorful pattern. There were sisters that did not like my ties and thought they were a bit too much for "the platform" but I was never counseled for stumbling them.