Fans turning up for the Britney Spears and Madonna reunion would have been expecting to see the 26-year-old in a typically raunchy outfit.
But instead the 50-year-old Material Girl was the one wearing the more revealing clothes as the pair performed a duet on stage.
The pop megastars looked like they should have swapped outfits as they sang together at the Dodger Stadium in Los Angeles during Madonna's Sticky and Sweet tour.
Megastars: Britney and Madonna perform a duet together on stage at the Dodger Stadium in Los Angeles last night
A demure looking Britney, dressed in a simple white blouse and black trousers was invited on stage by Madonna and joined in with one of her songs.
And Madonna was also joined by Justin Timberlake to join in with another of her hits.
Rumours that the former couple, who split in 2002, would perform together with Madonna proved unfounded though as they did not appear together on stage.
Madonna and Justin Timberlake show off some moves during the concert
It's a bit different from the last time Britney and Madonna appeared on stage together.
The pair caused a stir in 2003 when they shared a steamy lesbian kiss live on stage during the opening performance on the MTV Music Awards in New York's Radio City Music Hall.
It's not the first they have collaborated together, with Madonna appearing on Britney's track 'Me Against the Music' on her In The Zone album.
The Material Girl kisses Britney, on the hand this time, during their performance
The comeback Queen was pictured last week dressed up as a witch as she took her two sons Jayden James and Sean Preston trick or treating.
She posted the shots on her website, along with the cover art for her new album Circus, which is due out on her birthday on December 2.
And the 'Womanizer' singer is set to appear on the X Factor show in two weeks' time to meet the contestants and perform her new single.
Back on song: The pop stars put an arm around each other as they perform
Madonna has thrown herself into her 32-concert Sticky and Sweet tour of the Americas after the announcement of her divorce with Guy Ritchie.
She faces a bitter divorce battle with the film director, with Kabbalah leaders demanding a quick out of court settlement.
Flashback: Britney and Madonna share a lesbian kiss during the MTV Video Music Awards at New York's Radio City Music Hall in 2003
by Mail Online