Leona Lewis and Chris Brown. (File photos)

Reps for Leona Lewis and Canadian Keisha Chante have released statements denying the singers' involvement in the fight that apparently blew up between Chris Brown and girlfriend Rihanna after a pre-Grammy Awards celebration.

Lewis' spokesman said that "Leona was at the pre-Grammy party with her family and boyfriend and had nothing whatsoever to do with any argument that may have ensued between Chris and Rihanna. Any allegations that the pair had flirted are completely false," contactmusic.com reported.

Leona reportedly upset Rihanna by making moves on her man, and she's not the only one being accused. It's rumoured that fellow singer Chante and Brown have been secretly dating and that Rihanna allegedly flew into a rage when she thought her man was texting Keisha.

Chante's manager Mona Scott told Us Weekly magazine, "This is another unsubstantiated, untrue report; she was nowhere near the incident in any way. She's not even dating Chris! I think they met a few years back, probably three or four years ago in Canada... but that's it.."