What is the copyright law surrounding Ellen's famous Oscars group selfie?

But every self portrait is both vanity and reflecting the circumstances and world around it. I’m not fan of the selfie, but I certainly recognize it as something that a lot of people like to do. But if, for example, a model who makes their living having their photo taken creates one, is that any less of an artistic effort than ol’ Ansel up there?

For someone like Cindy Sherman the selfie is an entire body of work. You can say she’s making a statement about the ego and how she wants to be viewed, but isn’t Ellen or anyone else just doing the same thing?