Cutting the cake
The ceremony of cutting the wedding cake became popular originally for practical reasons. In the early days of wedding cakes the icing was extremely hard, mainly to support multiple tiers. Most brides were unable to cut through the icing without the aid of their groom.
The groom places his right hand over the bride's and together they cut the first slice. Often they offer each other a bite, which indicates their willingness to share everything life may bring together.
An additional touch to the ceremony is for the bride and groom to each offer the next piece of wedding cake to their in-laws. The remainder of the wedding cake is then cut and served to the other guests.
Traditionally only the bottom tier of the wedding cake was served at the reception, the middle tier was sent to family and friends who were absent. The top tier being kept to be used for the christening of the first born.