Over exposed: Is Annie Leibovitz worthy of a retrospective at the National Portrait Gallery?

In the announcement of the National Portrait Gallery's forthcoming retrospective of work by the celebrated New York-based portrait photographer Annie Leibovitz, one of the sponsors of the show lets us know how proud he is to be working with Annie (note the personal touch) again. Words such as trust, respect, service are bandied about. These are words that are at odds with what many of us think photographers are up to quite a lot of the time. But surely Leibovitz is not one of these? Surely Leibovitz, photographer of an entire, all-too-well-known world of stars and starlets, is not quite like this?