2 tier wedding cakes start at 6 pounds (30 servings) using a 6" tier on a 10" tier. 3 tier wedding cakes start at 10 pounds (50 servings) using 6", 9", & 12" tiers. 4 tier wedding cakes start at 18 pounds (75 servings) using 6", 8", 10", & 12" tiers.