I know this may feel a little strange showing you how to cut a cake, however, cutting a cake in this way will enable you to get the most amount of servings. It's also a really handy indicator as to what size of cake, as well as how many tiers, you may need to order to cater for all of your guests.
It's surprising how many portions even the smallest of cakes will provide. The photos below show a mini 4" cake and gave eight Party Slices (also known as Dessert Slices or Coffee Slices) cutting these in half again will provide a Wedding Slice (also referred to as a Canape Slice or Finger Slice) meaning this mini cake would comfortably have served 16 wedding guests.
The Wedding Slices may seem small at first glance, but if you take into account that by the time it comes to cutting the cake most guests will have eaten a wonderful meal, and the cake is often served alongside the evening buffet, small portions really are all that's needed.