I generally wear a pair of kahkis and a cotton shirt - not a t-shirt.
Some days I will splurge and wear a long skirt with a nice sweater or cotton
blouse. I have resorted to wearing all cotton materials because they are
easier to clean and are more comfortable. (Also, I don't usually have to
iron them either!) We are suppose to be professional when we dress, but no
one adheres to it. I guess you could say we are "business casual".