When my daughter turned three she and I made a Tinkerbell cake together which consisted of very pink icing and a lot of love (and mess). A few weeks ago I was asked to make a three tier cake to host Tinkerbell and friends figurines amidst some flowers.
The top tier is chocolate, the middle tier is vanilla, and the bottom is carrot with creamcheese filling. The cake is iced in buttercream, but all flowers and blades of grass are made in fondant and gumpaste. I have made a gumpaste Tinkerbell in the past, but the customer had these figurines in mind when she ordered the cake. We were able to insert them into the cake to look as if they are flying.