People as old as me will remember "back in the day" doing Shadow Portraits; you would set up a light by the side of your face to leave a shadow of your profile onto a piece of paper taped to the wall. Someone would trace the outline of the profile and then it could be cut out, pasted to a background, and framed. A famous example of this are the pair of portraits of President's Washington and Lincoln found in many classrooms.
This artist has taken this technique to the next level.
Visit "Paper Cuts" by Olly Moss for wonderful Profile Portraits of many pop culture icons and well known personalities.
Take a look at these two and I think you'll see what I mean: