I've been viewing the gallery for square wedding cakes and I notice several where the bottom tier appears to be double in height. And then the tiers above it look normal size. And I've also seen others where the bottom and top tier are normal height and the middle tier is much taller in height. I like the look of these and was wondering if the "taller" tier is actually 2 tiers the same size stacked and iced on top of each other. Or are they just tall layers baked in 3-in deep pans? I'm anxious to know how this is done and I'm sure one of you out there knows!