Madonna and Britney Spears are reportedly planning to join forces in the studio.
According to MTV's website the Queen and Princess of pop have been talking about recording a duet together in May.
But their managers say nothing's been confirmed yet.
It's no secret that the two stars are big fans of one another. Britney and Madonna have recently displayed their mutual admiration by wearing T-shirts with each other's names on.
Madonna has also been reported as saying she has nothing but support and praise for the teenage star, and Britney's been quoted saying Madonna's an inspiration to her.
If the rumours are true, it's thought the pair's collaboration may feature on Britney's third album, which is due out in the early summer.