Christina Aguilera says there is a 'possibility' she will record a duet with Justin Bieber.

The two stars attended the American Music Awards (AMAs) yesterday, where Justin was honoured with three prizes.

The Moves Like Jagger singer admires the 18-year-old and wouldn't rule out a musical collaboration.

'I'm really into this song right now called, As Long as You Love Me and it's Justin Bieber's song, so I'm actually looking forward to it tonight,' she told Extra TV.

'Would I collaborate with Justin? Who knows, the possibilities are endless, so we'll see.'

The teen star recently worked with Nicki Minaj on catchy track Beauty and a Beat and the singers performed both separately and together at the awards show.

Even prior to his AMAs performance Christina admired the young heartthrob's music and took to Twitter to share a link to his As Long As You Love Me video.

'Must admit I'm loving this @justinbieber song. It's my JAM right now! :) :) (sic),' she wrote.

The 31-year-old also took to the stage at the AMAs to perform tracks from her latest album, Lotus.

The star showed off a curvier figure in a gorgeous purple dress on the red carpet and later changed into a tight black corset for her stint on stage.