Will Madonna headline Jackson tribute concert?

Madonna has been tipped to headline a special tribute gig in memory of tragic superstar Michael Jackson.The King of Pop died unexpectedly after suffering a cardiac arrest at his Los Angeles home on June 25.

His death came as he was preparing to launch his comeback This Is It tour, with a 50-date residency at London's O2 Arena, starting in July.After hearing of his shock death, Madonna - dubbed the Queen of Pop - revealed she was planning to join her old pal Jackson on stage at one of his scheduled concerts.

Her manager Guy Oseary wrote in a Twitter.com post, "A month ago Madonna told me she wanted to do a surprise performance at one of Michael Jackson's U.K. shows."Now reports suggest the show will go on for the This Is It tour crew - plans are reportedly afoot to stage a replica concert of what Jackson had planned as a tribute to the late superstar.

And the Material Girl is being touted as one of the leading stars of the show, which will see a number of artists perform cover versions of Jackson's huge discography, according to MSNBC's The Scoop.

Plans are still in its initial stages, but the concert is likely to take place in Los Angeles.