Terry O’Neill/Hulton Archive/Getty Images

These pictures by Terry O’Neill, from a current exhibit at the Morrison Hotel Gallery in the SoHo section of Manhattan, celebrates 50 years of photography of the Rolling Stones. The photos caught our eye recently, and also raised some questions.

Who is that? What is going on here?

The woman identified herself only as “Angel,” according to a representative for O’Neill. She simply showed up naked that day at Stephen Stills’s house in Laurel Canyon, Calif., and sat down. The band had never seen her before.

We reached out to the Stones, but go no response.

Does anyone know who this woman is? Can she come forward and share her memories of that day?

Please tell us what you know in the comments section below.