One of the amusing effects of this week's announcement that Britain's Prince William is going to marry his long-time girlfriend, Kate Middleton, is that every copy of the blue dress that Kate was wearing at their photo-op has disappeared. The shops here in London say that they sold out of the dresses within 24 hours of the latest event-of-the-century announcement. People understand why, of course, at least intuitively: everybody wants to be somebody and the somebody that everybody who's anybody wants to be this week is either partner in Britain's new royal couple.