Singer has asked the ex-lovers to appear on her world tour
The singer’s Sweet and Sticky gigs kick off in August, and she’s asked her famous friends to join her for the final date in November.
‘Madonna is always trying to raise the bar and Britney and Timberlake on the same stage would be perfect,’ a source tells The Sun.
‘They have both been asked but I think both are reluctant. Britney would find it all a bit emotional and JT might not fancy it.
‘But if anyone can make this happen it’s Madonna.’
Britney, 26, has already filmed a raunchy cameo the 49-year-old’s tour, which will be beamed on to a giant screen.
And she is currently in the recording studio working with producers on a comeback album.
Her four-year relationship with Justin ended in 2002.