I don't think either of us realized how much it's going to cost honestly. I know she invited between 125-150 but most of those people were probably Facebook "friends" and of course family. But at her first wedding there were only like 20 or so and that was all her family. I would say 75 at the most will be there but I still figure less. But I'm afraid that on the off chance that more would show up, I want there to be enough cake. Yet, I don't want to work so hard for it to be thrown in the trash either :( My mother in law says to do a 14, 10, and 8. And according to Wilton's that would serve 140. I think that's plenty of cake. But I think she may be disappointed that it's not as big or as much as she wants. I'm not going to not do the cake, I just don't want it to be over kill. Plus I thought we had a 12in. pan and we don't so that is an extra expense there. I sound like I"m being cheap, now I see why wedding cakes are so expensive!