I'm making a Tiffany Co. Box Cake for a Bridal shower.

There are going to be 80 People. I am making 2 tiers. Bottom 13"square and top 9" square. Do you think that will be enough to feed 80? I am going to make each tier with 2 layers. If I have to I can also make a 6" but only if i have to.

I'm just not sure how many people each one feeds.

All input is much appreciated!!
Thanks.

If you cut typical wedding servings 1x2 the 13" should serve about 75 and the 9" should serve about 35, depending on who cuts it.