1st Birthday Cake. Bottom tier is 10in styrofoam cake dummy Middle Tier is 8in strawberry/vanilla marble cake with strawberry swirl buttercream Top Tier is 6in Choc Marble cake with choc hazelnut buttercream. This is not my design, all credit to My_Edible_Art - 'A Garden for a Butterfly' whose cake was so beautiful I copied it for my daughters 1st bday.