  Lower dimensional gravity has the potential of providing non-trivial and
valuable insight into some of the conceptual issues arising in four dimensional
relativistic gravitational analysis. The asymptotically anti-de Sitter (2+1)
dimensional spacetime described by Ba$\tilde{n}$ados, Teitelboim and Zanelli
(BTZ) which admits a black hole solution, has become a source of fascination
for theoretical physicists in recent years. By suitably choosing the form of
the mass function $m(r)$, we derive a new class of solutions for the interior
of an isotropic star corresponding to the exterior (2+1) asymptotically anti-de
Sitter BTZ spacetime. The solution obtained satisfies all the regularity
conditions and its simple analytical form helps us to study the physical
parameters of the configuration in a simple manner.
