Alright Joe, I’ve always been told it might be appropriate to wear a suit or shirt and tie and have done to the presentations I have been to (3 to date I believe, the video gets really boring!).
I don't believe there is a real necessity to get dressed up, it looks better in my opinion, you will look smarter than wearing jeans and a t-shirt and it does give a good initial impression.
Enjoy the presentation and good luck with the rest of your application.
ppf
