My chapter held a Parent's weekend last spring. On Saturday we had a big BBQ. Each family brought a home cooked/family recipe dish and everyone just hung around and chatted. My sisters and I also sang some of our cutesy Kappa songs for our parents. =] And on Sunday we had a Brunch we're we gave out awards to each sister. I got "most likely to cheer you up." And others got things like.. "best key sisters," "most athletic," "the three amigos." I hope that helps. =] Oh and I don't have a picture of our shirts, but I do have a picture of our sheet sign that we hung at the house, which looks exactly like our tshirts.
http://i30.tinypic.com/30wlf7p.jpg instead of "welcome parents" the shirts say "now you know where we got it from!"