An interior rearview mirror system for a vehicle includes an interior rearview mirror assembly having a mirror head with a mirror reflective element. The mirror reflective element includes a transflective mirror reflector. A video display screen is disposed behind the mirror reflective element and is operable for displaying video images viewable through the transflective mirror reflector of the mirror reflective element. When not operated to display video images, the presence of the video display screen behind the mirror reflective element is rendered covert by the transflective mirror reflector. The interior rearview mirror assembly includes a mechanism operable to change the orientation of the mirror reflective element relative to the vehicle driver. The mechanism operates to flip the orientation of the mirror reflective element between a first position that is tilted towards the vehicle driver and a second position that is tilted away from the vehicle driver.