Britney Spears is set to record a video segment for Madonna's upcoming tour.

The troubled singer - who famously kissed Madonna at the 2003 MTV Video
Music Awards - will be filming a virtual appearance for her idol's 'Sticky
and Sweet' concerts.

Madonna's representative Liz Rosenberg confirmed: "Britney is going to film
something for Madonna's show in the next week or so. I don't know what they
are doing. It's a secret."

However, mother-of-two Britney is unlikely to be making an appearance at any
of the 'Give It 2 Me' singer's performances, which start in Wales next
month.

This is not the first collaboration between the two stars.

In addition to the controversial MTV performance, Madonna lent her vocal
talents to Britney's 2003 single 'Me Against The Music' and also appeared in
the raunchy video.

Britney, 26, is attempting to get her career back on track, and is said to
be planning her own tour for later this year.

Earlier this year, a source close to the singer said: "Britney will be
leaving the US in the next few months, after training in privacy for a
month. She is planning a global tour."