  Internal diffusion limited aggregation (IDLA) is a random aggregation model
on a graph $G$, whose clusters are formed by random walks started in the origin
(some fixed vertex) and stopped upon visiting a previously unvisited site. On
the Sierpinski gasket graph the asymptotic shape is known to be a ball in the
usual graph metric. In this paper we establish bounds for the fluctuations of
the cluster from its asymptotic shape.
