A popular theme that works well for either a boy or a girl is a clown or other circus_related cake. They are usually very bright and colorful, which makes for instant attraction and a great focal point for a party table.
Birthday cakes are usually of different types, depending on the ingredients used. People of different ages also have different tastes for them. For instance, kids usually like chocolate flavored cakes. The decorations and icing are always unique and striking and many mothers have always been very creative with the preparation of birthday cakes for their children. In the case of teenagers, they are a bit more mature and are not likely to go for a birthday cake with cartoon characters. Therefore, they like cakes which are simple in designs or cakes with styles such as bikes, cars, teen stars, chocolate bar, baseball, cakes, and so on.