  By coupling {\cal N}=8 superconformal matter to {\cal N}=8 superconformal
Chern-Simons gravity in three dimensions we obtain theories with novel terms in
the scalar potential leading to AdS_3 solutions and superconformal symmetry
breaking. If we start from the theory derived by Bagger, Lambert and
Gustavsson, our coupled theory either inherits the SO(4) gauge group or reduces
it to SO(3). If the construction is instead based on a free matter theory we
find that the gravitational topological gauging also requires the introduction
of a Chern-Simons gauge sector resulting in a consistent theory for any SO(N)
gauge group.
