I made this cake for my daughter's princess birthday party. The bottom tier is an 8-inch square and the top tier is a 6-inch round. The cake is strawberry with white chocolate ganache, covered in marshmallow fondant. I made the towers out of a cake cone on top of a cardboard tube, with sugar cones painted pink with food color for the roof. The princess figurines are from a deco-pak, and Ariel's "water" is blue piping gel.