Madonna has reportedly asked Britney Spears to join her on tour, in a bid to help the troubled star resurrect her singing career.

The Material Girl hitmaker is set to meet with Spears in New York on Sunday (06Jul08) to record a video, which will be broadcast on big screens during her upcoming Sticky and Sweet tour, due to kick off on 23 August (08).

And according to reports, the 49-year-old has even invited the Toxic star to join her onstage at some of her world tour dates.

A source tells British newspaper The Sun, "They are recording a video together on Sunday that will provide the backdrop for part of Madonna's show.

"And they are talking about Britney taking the stage on a few of the dates too.

"It's hoped that Madonna can help Britney get back to her old self."

The singers previously stunned fans at the 2003 MTV Music Awards when they shared a passionate kiss onstage.