i am pretty new and havn't figured this all out yet. i am doing a batman lego cake with three seperate "buildings" for the cake and i havn't the foggiest idea what size the make the builings. it also has to be transported about 60 miles. i wonder if it would look jsut as good with the buildings being wider than they are tall instead of the tall look like int he pic

http://www.wilton.com/cakes/making-cakes/baking-wedding-cake-2-inch-pans.cfm

Here is a link to serving chart. I use wedding chart for all cakes, as they are plenty big pieces anyways.

If your two buildings on the side are 6", you get 18 servings out of each. Build them up taller with 1/2" foam core to make them look taller.

Your middle cake could be an 8" which gives 32....so you are already at plenty of servings. You could even cut part of the middle building to look more proportional to the other two, and have plenty of cake.