This is my first try at a tiered cake. The bottom is 6" and came out ok, the middle layer is 4" and the top is 2 cupcakes - I had some problems with them. But I learned a lot. The inspiration came from several cake designs at www.pinkcakebox.com. My cake was lemon with raspberry filling - and was really yummy. I never thought I would have so much fun making my own birthday cake.