LS&A Magazine has a nice slideshow up showing how game-day fashion has evolved over the years. (Or devolved - you kids get off my lawn!) Link is here: http://www.lsa.umich.edu/lsa/archives/ci.footballhautecouture_ci.detail .
It's entirely unrealistic on many levels, but I'd love it if we could organize a "throwback fan uniform" day. I understand raccoons are 100% against this idea, BTW.
A sample shot from the 1930 homecoming game against Illinois. That blanket is the bee's knees, I tell ya.