  We briefly review some recent developments in theoretical models of fermion
masses, mixings and CP violation with discrete non-Abelian symmetries. Then, we
explain the main ideas of a recently proposed Minimal S_3 Invariant Extension
of the Standard Model and its application to a unified analysis of masses,
mixings and CP violation in the leptonic and quark sectors as well as the
explicit computation of the V_PMNS and V_CKM mixing matrices.
