I have contacted the person that made this cake numerous times, but she has been unable to get back with me. I have a bride that wants this cake, but I can't figure out how high the tiers are, any help?

Top three are probably 6", bottom is 3".

Thanks, I was trying to figure out if they were five or six inches, and if I should bake two 3" cake with fillings, or three two inches with filling, which would put them over the six.

I think I would bake 3- 2" cakes to make 6". Once you trim them a bit you will most likely be at 6" .