I received 4 cakes: 6", 8", 10" and 12".
Royal icing forms to a very hard texture, and will stand up to hot weather and humidity.
Royal Icing Recipe
-3 egg whites, room temperature
-1 lb. confectioners' sugar
-1/2 tsp. cream of tartar
-Combine ingredients, beat at high speed for 7-10 minutes. Yields less volume than royal icing made with meringue powder.
Here are some photos behind the design of the cake.
And the final product: