And for women? What do you suggest? Are women wearing nice dress suits still? Or are a nice sweater and pants the women's equivalent to the sport coat, followed by the suit the next day?
Skirt or dress pants, with a jacket or a cardigan, seem to be the feminine equivalent of the khaki-and-sportcoat look. The suit--with either pants or skirt--is still the best/safest idea, especially for meetings with administrators. There are, of course, departments where one could wear jeans and it wouldn't matter, but it's impossible to know that in advance.