Okay, now I know my limit. This was a 7 tiered beast for 250 people. From top to bottom: 5" carved round, 7" round, 9" petal (single layer), 10" round carved, 12" round, 15" petal, 16" round carved. I use a stiffened buttercream dam and suspected it was a bit soft but used it anyway and the freeway route I took with allllll of its maaannnny continuous bumps - at every concrete joint - took its toll and I got bulging from the filling. I HATE bulging!!!! Anyway....the cake still turned out pretty and thank god cake civilians would never notice the bulging. The bride and groom had no complaints about this - I just would rather things perfect, of course. Sugar flowers & MMF with airbrushed super pearl