The actual design remains a secret, but the cake will have a strong British floral theme, developed with extensive input from Middleton. The master baker will use the Lambeth Method, a popular English style that relies on intricate piping and scrollwork to create leaves, flowers and other decorative elements.
Middleton asked Cairns to represent about 16 different blooms and types of foliage on the cake, each with a different symbolic meaning, a practice that was popular in the Victorian era, palace officials said. Sources : News Online