My daughter wanted a unicorn/tiara/rainbow/pink cake so that is what she got for her 4th birthday! I just used funfeti cake mix for the "rainbow" and added a lemon cream filling between the layers. The pink icing is a whipped butter cream (similar to Kroger icing). The flowers, bow, and unicorn are all just plain fondant that I made ahead of time. The tiara (from a dollar store) and candles are the only non-edible part of the cake