To be a twin can be a psychological house of mirrors. And so where better to meet up with Tegan and Sara Quin — feminist pop heroes, freshly minted authors, and, like us, identical twins — than at a kaleidoscopic infinity room in Chelsea? As we left the small mirrored room at the kitschy Museum of Illusions, where our likenesses warped and refracted, we encountered a third set of twins. Reality grew ever more psychedelic, and we snapped a photograph of the six of us to commemorate it.