Lady GaGa and U2 singer will both appear on Lionel Richie's charity single for the victims of the recent earthquake in Haiti, it's been reported.

The two acts will join the likes of Usher and Jennifer Hudson on the remake of Richie and Quincy Jones' hit, 'We Are The World'.

As many as 100 singers could eventually feature on the song, which is being produced by RedOne, according to E! Online.

'We Are The World' was originally released in 1985 to help raise money for famine relief in Africa.

Last month, it was claimed the song's co-author Michael Jackson could also make a posthumous appearance on the new version.

It is the latest song to be released in aid of the victims of the earthquake in January.

Jay-Z, Rihanna and Bono have already released 'Stranded', while Simon Cowell's all-star remake of 'Everybody Hurts' by R.E.M. is out on February 7.

(by Jason Gregory)