I'm making a 3-tier wedding cake for a very good friend, and would like to get some ideas from any Chowhound who also loves to bake. I made several other wedding cakes, and have been satisfied with all the results, but I'm still looking for the definitive recipe of a cake that will hold up under being stacked, and decorated. I'm specifically, looking for a white cake recipe. I'm also looking the best plain buttercream frosting recipe that I can find. Any ideas out there?