I have to make a wedding cake for a friend of a friend (freebie, I was caught at a weak moment). I was thinking of 3 tiers; a 10in, 8in and 6in and now I've been informed that the wedding will be approximately 50 people. Is that enough cake and are the tier proportions correct? It's been a long time since I've baked a cake much less a wedding cake. Thanks for your adivce.

Yes that is big enough, should serve around 70. The porportions are right, there is 2 inches between each tier.

This helps me when I have to look up serving sizes. Not sure if you use 3 in or 2 in pans but here is the one for the 3 inch. All the info is on the wilton site

http://www.wilton.com/cakes/making-cakes/baking-wedding-cake-3-inch-pans.cfm

Even with Earlene's generous portions, you still get 53. Definitely enough.