do any alumni wear letters?

[Kevin]

Not really, no. I can't think when I'd wear a lettered shirt or even a t-shirt on any occasion besides possibly as a workout shirt.

When I attend alumni events, it's either going to be black tie, to which I wear a traditional tux. If it's for homecoming or to attend Greek Week, I'm typically wearing a polo with the school colors or at least a school-colored tie/neutral sports coat, etc.