  We study the double bubble problem with perimeter taken with respect to the
$\ell_1$ norm on $\mathbb{R}^2$. We give an elementary proof for the existence
of minimizing sets for any volume ratio parameter $0<\alpha\le1$ by direct
comparison to a small family of parameterized sets. By simple analysis on this
family we obtain the minimizing shapes found in Morgan et al 1998.
