The Minimal Supersymmetric Standard Model (MSSM), despite being a theoretically successful and highly predictive model, suffers from some technical setbacks and leaves ample room for further modification. We analyzed two extended versions of the minimal model: an MSSM with explicit CP-violation in the Higgs sector, and a model with an extra singlet scalar Higgs field in addition to the two MSSM doublets, referred to as the Next-to-Minimal Supersymmetric Standard Model (NMSSM). We looked for Higgs signatures in both these non-minimal models, focussing mainly on the di-photon decay mode of the Higgs boson, and found significant deviations from the MSSM scenario in each case.