What about making them all the original Disney crew? Mickey(Sesshoumaru with Mickey ears?), Minnie (Kagome), Donald, Goofy, Pluto. You could even toss in Chip and Dale (Sango and Miroku?) and Daisy Duck (make Inu Donald and Kikyo Daisy?) This way the theme would carry through the group and it would be a bit different. (Sesshoumaru in Mickey ears and shorts with big buttons
.... looking a touch miserable)
I have to agree, though, the thought of a Toto dressed Sesshoumaru standing or sitting next to a standing Dorothy dressed Kagome is a funny idea.