Two of the most powerful singers in music today have reportedly collaborated on a duet that will appear on the upcoming Sex And The City 2 soundtrack. We hear English songbird [lastfm]Leona Lewis[/lastfm] has recorded a song with singer [lastfm]Jennifer Hudson[/lastfm] for the eagerly-anticipated chick flick.

“The pair have recorded the song and it’s being discussed as either the main theme or to feature on the soundtrack. They each have incredible voices and will appeal to both the UK and the US. It’s perfect for the next SATC (Sex and the City) film,” sources told London’s The Sun.

Leona performed the theme song to the 2009 Oscar-nominated epic Avatar. J-Hud appeared as Carrie’s assistant in 2008’s Sex And The City: The Movie. The full theatrical trailer for the upcoming Sex sequel premiered last week.