The interference and diffraction are two fundamental phenomena in optics. The patterns evolution phenomena have been shown for the interference and diffraction experiments respectively. In this article, we show for the first time the novel patterns, the Interference + Diffraction Hybrid Patterns of the novel double slit experiment, namely the interference pattern embedded in diffraction patterns. We also show how the patterns evolve, i.e., how the Interference + Diffraction Hybrid Patterns are formed. It is a challenge to theoretically interpret/describe.