For her 18th Birthday and engagement party, Daddy had fashion designer Deborah Wingham design a model runway style cake that is decorated with 400 one carat and 35 three-carat white diamonds and 75 three-carat black diamonds.
The diamonds were attached to the cake similar to the way Wingham attaches them to gowns: set in platinum in order to add impact and value but this time, attached with icing instead of thread. Every piece of the cake was hand sculpted by Wingham over 1,100 hours. The cake weighs almost 1k pounds.
Source: Here’s What a $74 Million Cake Looks Like – ABC News