Has anybody been to one of their "Day In The Life" programs and seen how dressed up people got? The girls in this picture
are dressed way more formally than I imagine the event would be, but I don't want to feel like an under-dressed jackass.
I went and wore a suit, but my attitude was that it was a weekday and I should wear whatever I would have worn to work that day. All of the guys were wearing suits, IIRC. Girls were generally business-casual. One girl wore jeans and big hipster Nikes and she looked like a total jackass. Don't be that girl.
Just remember that all of the administrators you're going to be meeting with are at work.
They'll be dressy (some were in suits), so it's courteous to at least be in the same ballpark.