First, I'm going to visit a few schools no one has mentioned on here.
Second, I agree with APGradApplicant, go business casual. However, from my neck of the woods, that could mean sweatpants that look like jeans (http://www.coolthings.com/pajama-jeans-look-comfy/), and a Harley Davidson collared shirt, with a flashy pair of high heeled crocs. I wouldn't lie to you guys (http://www.crocs.com/crocs-cyprus/10122,default,pd.html?cid=240).
I think we have all noticed what some of our past professors have worn, and it's not exactly a runway show in Paris.
Being the metrosexual I am (I have a girlfriend before you all start judging), I'm sure I'll get all kinds of ridiculous looks and people will most certainly feel I am overdressed.