Britney Spears is on the cusp of signing on to join Simon Cowell and Antonio ‘LA’ Reid as a judge on America’s The X Factor, according to US reports.

A source tells The Hollywood Reporter that Spears’ fiancé and agent Jason Trawick is negotiating a deal, which could be signed as early as next week.

Janet Jackson was also in the running as a potential judge, but reportedly bowed out citing previous commitments.        –ON