wedding cake
n.
A rich cake with two or more tiers and covered with frosting and decorations; served at a wedding reception.
A wedding cake is the traditional cake served to the guests at a wedding breakfast, after a wedding. It is usually a large cake, multi-layered or tiered, and heavily decorated with icing, occasionally over a layer of marzipan or fondant, topped with a small statue representing the couple.
Also known as bridecake.