Musicians Chris Brown (R) and Rihanna perform during the Z100 Jingle Ball in New York, in this December 13, 2008 file photo. Grammy organizers said on February 7, 2012 that Brown will perform at this Sunday's Grammy Awards. For Brown, it will be the first time performing at the Grammy's since beating his then girlfriend Rihanna in 2009 on the eve of the music industry's biggest night, which threatened to derail his music career. Rihanna also is among the stars performing live at the event, and rumors have flown among fans and celebrity watchers in recent weeks that the pair may be secretly dating again - speculation Brown's representatives have dismissed. REUTERS/Lucas Jackson/Files (UNITED STATES - Tags: ENTERTAINMENT PROFILE SOCIETY) © Bild: Reuters/LUCAS JACKSON Zweite Chance 07.12.2012 Aufgewärmte Liebschaften Im Showbusiness bahnt sich ein neuer Trend an - die Rückkehr zum/zur geliebten Ex. von: Mirad Odobašić © Bild: Reuters/LUCAS JACKSON File photo of musicians Chris Brown and Rihanna pe © Bild: APA/PAUL BUCK FILE USA CHRIS BROWN © Bild: photopress.at 07843610_ppsvie.jpg © Bild: photopress.at 07818227_ppsvie.jpg © Bild: photopress Wieder vereint: Selena Gomez turtelte mit Freund Justin Bieber, der aber ein lausiger Enkel sein soll. © Bild: APA/PAUL BUCK USA BASKETBALL NBA © Bild: Reuters/EDGAR SU McLaren Formula One driver Hamilton walks with his © Bild: Reuters/PAUL HACKETT U.S. singer Nicole Scherzinger and McLaren Formula © Bild: Reuters/JESSICA RINALDI Sienna Miller and Jude Law arrive at the Metropoli © Bild: Reuters/ROBERT GALBRAITH Actors Wilson and Hudson attend NBA playoff game i © Bild: Reuters/MIKE SEGAR Actor Duchovny sits with his wife, actress Leoni, © Bild: APA/JENS KALAENE GERMANY BERLIN FILM FESTIVAL © Bild: Reuters/LUCY NICHOLSON Actor DiCaprio sits court side Refaeli as Lakers p © Bild: Reuters/MARIO ANZUONI File of DeVito and his wife Rhea Perlman kissings