Just looking for some advice on how big the cake should be for 35-40 people. This is the second wedding cake I've made so still fairly new to the logistics of layer sizes and the best combinations for aesthetics too. I've looked at various websites and when the cake is for a smaller wedding they seem to call for having two tiers - 10" and 6" but the bride was wondering if it could be three tiers. I don't want the cake to look out of proportion but if the cake were three tiers what would be the best cake layer sizes? Thanks for any input or suggestions.