I say where what YOU want to wear.... I am going to be graduating at the end of this semester and I know I will still be wearing my shirts and letters around.. I spent too much money not to wear them until they are thread bear ! I mean, you are a part of your organization for a lifetime, right... so why only let people know it for four years of undergrad ? I mean of course don't wear your hoodie with the 6 inch letters to your new job... but to the gym, on the weekend, to the grocery store, WHY THE HELL NOT where those letters with pride still ??!!