This is the late Bill Thurston, wrapping a tube around designer Dai Fujiwara at the Issey Miyake fashion show in Paris in the spring of 2010. A black and white version of this image was reproduced in Chapter 6 of Mathematics without Apologies and more recently on the Scientific American website.
Thurston was one of the all-time great geometers. He revolutionized the theory of foliations and brought hyperbolic geometry into the center of the study of 3-manifolds. His geometrization conjecture extended the Poincaré conjecture for 3-dimensional manifolds and, together with (Columbia colleague) Richard Hamilton’s ideas about the Ricci flow, provided a framework for Grigori Perelman’s successful solution of both problems. Among mathematicians of his stature, Thurston was also one of the most original thinkers about the meaning and the goals of the practice of mathematics; his article On Proof and Progress in Mathematics has influenced a generation of philosophers.
Here are a few photos of the Thurston/Issey Miyake show, among the first I ever took with a telephone (and it unfortunately shows).