This cake was so much fun to decorate! It's two tiers of vanilla cake frosted with vanilla buttercream tinted blue. The Ariel on top is a candle, but I made all of the sea creatures out of fondant, as well as the crown and the birthday girl's name. Then I added some crushed graham cracker "sand" and piped on some green underwater "plants." Such a fun birthday cake for an adorable little girl! Happy Birthday, Allison!