A vehicular interior rearview mirror assembly includes a mounting structure and a mirror head pivotally mounted at the mounting structure via a pivot joint. The mirror head includes a mirror casing and a display and mirror assembly, which includes a frame portion, a video display screen at a front side of the frame portion, and a mirror reflective element at a front side of the video mirror display screen. The mirror reflective element includes a variable reflectivity liquid crystal (VRLC) stack of layers, which have a liquid crystal (LC) layer disposed between a rear glass substrate and a front glass substrate. The front and rear glass substrates are integrated in the VRLC stack of layers. With the mounting structure mounted at an interior portion of a vehicle, the video display screen is operable to display video images derived from video images provided by an ECU of the vehicle.