Watch Taylor Swift fight Selena Gomez in star-studded 'Bad Blood' video
After a rather exciting build up which involved naming all the different celebrities with a cameo appearance, the amazing promo finally aired in full during last night's Billboard Music Awards in the US.
And it does NOT disappoint!
The whole concept is very Hunger Games-Fast & The Furious-James Bond, as Taylor's character Catastrophe is betrayed by co-worker Arsyn - aka Selena Gomez.
What happens next is an injured Catastrophe is nursed back to health at a secret, underground headquarters where she brushes up on fighting skills thanks to the likes of gun-toting Destructa (Ellie Goulding), scientist Trinity (Hailey Steinfeld) and kickass Crimson Curse (Hayley Williams).
There's also appearances from Lena Dunham, Lily Aldridge, Zendaya, Gigi Hadid, Jessica Alba, Serayah, Martha Hunt, Kendrick Lamar, Ellen Pompeo, Mariska Hargitay, Cara Delevigne, Cindy Crawford and Karlie Kloss.
Every star chose their individual character's name and persona.
'Bad Blood' was directed by Joseph Kahn and produced by Taylor herself, who called on the services of her many, many celebrity friends!