Portraits are no less art when they are of people who pay to have them done. That's just silly. That dismisses Reynolds and Titian and Gainsborough, for starters. Portrait painting takes the long view. Sometimes a bit of awkwardness turns into a bit of magic. It's a risk. But so are all the best things in life. So if you're in the mood for something with longevity, something your descendants will have NO IDEA what to do with, here are portraits by Natalia Riabova.