Taylor Swift previews 'We Are Never Ever Getting Back Together' video
The 14-second clip features Swift singing the chorus at an apparent house party as a group of people dance in the background.
The full video is due to premiere tomorrow (August 30) at 7.49pm ET on MTV, CMT and TeenNick.
'We Are Never Ever Getting Back Together' is the lead single from Swift's fourth studio album Red.
The popstar will perform the song on this year's MTV Video Music Awards on Thursday, September 6 at 8/7c.
Red will be released on October 22 in the UK and the US.