Diana Ross leaving the Ed Sullivan theatre after her appearance at 'The Late Show with David Letterman'. New York City, USA - 16.01.07

The movie is heavily inspired by Ross and her rise to the top with THE SUPREMES and she admits she hasn't even bothered to watch the film.

When asked her opinion on the movie last month (JAN07) she said, "I haven't seen it - maybe I should see it with my lawyer."

According to veteran Hollywood gossip columnist JANET CHARLTON, Ross hasn't yet responded to the request to sing at the ceremony on 25 February (07).

Source: WENN