Brane Russian doll

It is shown that an (n−1)-dimensional inflating brane-world instantonically created from nothing can exist in the region beyond the Rindler horizon of the Lorentzian spacetime associated with another inflating brane-world in n dimensions which is also instantonically created from nothing. Generalizing this construction we obtain an unbounded from above tower of successive brane-worlds inside brane-worlds, each having one more dimension than the one which it nests and one less dimension than the one which nests it.