Taylor Swift has performed live with Cher Lloyd.

The two female singers teamed up during Swift's show on Monday (August 19) at the Staples Center in Los Angeles.

They played a rendition of Lloyd's hit track 'Want U Back' as the crowd went wild.

Tweeting after the show, the former X Factor UK contestant said: "Had the most amazing time performing with @taylorswift13. She's the sweetest girl I've ever met!!! Loved it!!! Xxx."

Swift meanwhile said on Twitter: "One of my favorite moments of the night was @CherLloyd coming out to sing 'Want U Back'. The crowd went insane!! And she's such a fun girl!"

Lloyd also uploaded a photo of herself with the 'Red' star backstage. Watch Swift and Lloyd team up below: