  We propose a new model of a gravastar in (2+1) anti-de Sitter space-time.
This new three dimensional configuration has three different regions with
different equations of state: [I] Interior: 0 \leq r < r_1, \rho = -p ; [II]
Shell: r_1 \leq r < r_2, \rho = p; [III] Exterior: r_2 < r, \rho = p =0. The
outer region of this gravastar corresponds to the exterior (2+1) anti-de Sitter
space-time, popularly known as the BTZ space-time. Like BTZ model, \Lambda is
taken to be negative, which at the junction turns out to be positive as
required by stability of gravastar and mathematical consistency. After
investigating the Interior space-time, Shell and Exterior space-time we have
highlighted different physical features in terms of Length and Energy, Entropy,
and Junction conditions of the spherical distribution. It is shown that the
present model of charge-free gravastar in connection to the exterior (2+1)
anti-de Sitter space-time or the BTZ space-time is stable and non-singular.
