Michael Jackson will be joined onstage by his son, Prince Michael Jr, during his comeback shows at London's O2 Arena, according to reports.

The singer, who has battled to keep his children out of the public eye, is apparently keen for the family collaboration to happen at a number of dates.

"What better way to introduce his son to the music world than to have him come on stage during the most anticipated gig in history?” a source told the Daily Star newspaper.

A number of artists, including Leona Lewis, Britney Spears and Justin Timberlake, are also said to be talks to appear at the gigs, which begin on July 8th.

The self-proclaimed King of Pop will perform to over a million people during his 50-date London residency.

Jackson, now 50, has not performed a full concert since he was cleared of child molestation charges in 2005.

His last full tour, entitled HIStory, took place in 1996 and '97.

(by Jason Gregory)