Georgetown Interview attire

What are most people wearing to the "no-suit" interview at Georgetown? Should we still come in a shirt and tie, or will it be more business casual?

I plan to wear a shirt and tie. I am wearing shirt which looks fine without a tie. this way if no one else is wearing a tie, I'll just take the tie off. I feel it is better to be a little over rather than under dressed.

I asked what i should wear and the coordinator responded I should wear whatever I felt most comfortable in as long as it wasn't an interview suit. i have heard that it is a very traditional program, so I think I will probably wear at least a shirt and tie. maybe a sportcoat