Biggest Wedding Cake So what was the biggest wedding cake in the world? Mohegan Sun unveiled the world's biggest wedding cake at the New England Bridal Showcase on February 08, 2004. The wedding cake measured 17 feet high and weighed a whopping 15,032 pounds. It was made from 10,000 pounds of pound cake batter and 4,810 pounds of icing and could feed 59,000 people. Quite the extravagance ... Wedding Cake