By The model, known for being one of Swift's best friends, will play the part of Knockout, according to a new character poster.
Meet Knockout.
@karliekloss
#BadBloodMusicVideo pic.twitter.com/QYP7IOB8Hf
— Taylor Swift (@taylorswift13) May 11, 2015
Lena Dunham, Hailee Steinfeld, Kendrick Lamar, Paramore's Hayley Williams, Ellie Goulding, Gigi Hadid, Zendaya and Lily Aldridge were previously confirmed for the music video.
Directed by Joseph Khan, the visual will debut at the 2015 Billboard Music Awards on Sunday, May 17.
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Swift has said that each person involved in the video chose their own persona and character name.
'Bad Blood' is the fourth single to be taken from Swift's album 1989, following the releases of 'Shake It Off', 'Blank Space' and 'Style' in recent months.
Watch the music video for 'Style' below:
