Rihanna is to perform in public for the first time since being attacked by Chris Brown six months ago.

The 'Umbrella' singer will appear on the 'The Jay Leno Show' on September 14, alongside hip-hop stars Kanye West and Jay-Z.

The trio are expected to perform their new single 'Run This Town'. Tom Cruise is also in negotiations to appear on the programme.

Rihanna, 21, has kept a low-profile since she was assaulted by her then-boyfriend Chris Brown in February.

Chris pleaded guilty to the attack in June and was sentenced to five years' probation, 180 days of community service and ordered to attend an anti-domestic violence programme.

He is also banned from going within 50 yards of Rihanna.

But the singer recently announced she wants Chris' court order downgraded to a level-one protective restraining order.

Her lawyer Donald Etra said: "That order would prevent Chris from annoying, molesting or harassing her. That level-one order would fully protect her.

"The order in effect now is a stay-away order preventing them from coming within 50 yards of each other.

"But Rihanna's position from the beginning is that there was no need for that level of protective order."

Chris' scheduled formal sentencing hearing on Wednesday (05.08.09) was postponed until August 27 after the judge ruled she was not satisfied with the terms of his community labour order.