Traditionally the bride would place a ring inside the couple's portion of the cake to symbolise acceptance of the proposal. Bride's pie would evolve into the bride's cake. At this point the dessert was no longer in the form of a pie and was sweeter than its predecessor. The bride cake was traditionally a plum or fruit cake. In mid-18th century, double icing, which means covering the cake first with almond icing and then with the kind of white icing, was used in bride cake. White-iced upper surface of the bride cake was used as a platform on which all sorts of scenes and emblems could be mounted. The decoration was appeared, they were often at least partially three-dimensional, were colourful. However, since some decoration were made in a variety of substances, sometimes the decoration or even parts of wedding cake were inedible. In The myth that eating the pie would bring good luck was still common but the glass ring slowly died out and the flower bouquet toss replaced it.
You should use a recipe specifically designed to be a wedding cake as it will ensure that it is sturdy enough and that it makes the right amount of batter and icing. For a three-tier cake, you need to make three cakes of 12", 9" and 6", as well as a massive amount of icing. Most three-tier cake recipes have a step-by-step schedule for when you will need to bake and assemble each part.