Rihanna's attorney, Donald Etra, would not say whether she wanted the restraining order lifted, but if Rihanna wants the order modified she must personally appear in court to request it, Etra said.

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"Genuine major performing artistes of international stature, including amongst their celebrated number Sir Paul McCartney, Pink Floyd and Bryan Ferry have personally agreed, in written communication, NOT to appear at the Not The Millennium Concert For Peace at London's Famous Hackney Empire on Millennium Night, " he writes in a message on the site.

BBC: Pop stars prepare to party