Kähler potential will be a general non-renormalisable real function invariant under all the symmetries of the theory coupling the superfield combinations $\psi _{i}^{\dagger }\psi _{j}$ to the flavon fields, and similarly for ${\psi^c}_{i}^{\dagger }\psi^c_{j}$, where $i,j$ are flavour indices. The terms $\psi _{i}^{\dagger }\psi _{i}$, ${\psi^c}_{i}^{\dagger }\psi^c_{i}$ without flavon superfields are clearly invariant under gauge, flavour and global symmetries and hence give rise to a family universal contribution. However, family symmetry breaking terms involving flavon superfields give rise to important corrections [@softflavour; @alignment; @leurernir]. In fact, it is interesting to notice that, due to the non-holomorphicity of the Kähler potential, new terms are allowed with different structure from the terms that appear in the Yukawa couplings of the superpotential.

In general the matter fields do not have canonical wave functions (kinetic terms) in the symmetry eigenstate basis $\hat{\psi}_{i}^{c}$, $\hat{\psi}_{j} $ [@peddie]. Rather, flavon field vevs contribute to the diagonal terms and also generate new flavour off-diagonal entries. Thus, we have now non-canonical kinetic terms and we must redefine the fields to obtain canonical kinetic terms. The effect of these redefinitions, which can be regarded as wave function corrections, on the Yukawa couplings and other couplings in the theory may be 