We generally do matching shirts for the flights (a holdover from my wife's family - if somebody gets separated, "What are they wearing?" "This."). For the past trip, since the lineup works right, we all wore Incredibles shirts, and then all wore them into Studios halfway through the trip. Got some great Photopass shots out of the deal, although there weren't Incredibles meet-and-greets at the time.
Good idea. My family. Hmm probably not.
I suspect we'll do the same on the next trip, and we'll have to make sure we get an Incredibles photo op.