The age of social media and immersive technologies has created a growing need for processing detailed visual representations of ourselves as virtual and augmented reality is growing into the next generation platform for online communication, connecting hundreds of millions of users. A realistic simulation of our presence in a mixed reality environment is unthinkable without a compelling and directable 3D digitization of ourselves. With the wide availability of mobile cameras and internet images, we introduce a technology that can build a realistic 3D avatar from a single photograph. This textured 3D face model includes hair and can be instantly animated by anyone in real-time through natural facial performances captured from a regular RGB camera. Immediate applications include personalized gaming and VR-enabled social networks using automatically digitized 3D avatars, as well as mobile apps such as video messengers (e.g., Snapchat) with face-swapping capabilities. As opposed to existing solutions, our technology enables the automatic generation of a complete head model from a fully unconstrained image.