What to wear on Georgetown Interview

Does anyone have any suggestions as to what to wear. The said in there confirmation that you are not to wear an intervew suit. I plan on wearing slacks and a button up shirt without a tie... If you have interviewed there in the past what is the standard?

I have heard stories of folks showing up in a muscle t-shirt.. don't worry, that confused me too haha..

I have my interview there next week.. and I think I'm going to do something along the same lines..

I would just wear something resonable like buisness casual. Suit pants with button up shirt, no tie. Khakis with button shirt, no tie. Something along those lines so you neat, but something comfortable. They aren't grading people on what you wear unless it is a tobacco stained and torn wife beater... which will defintiely get you in.