Taylor Swift had a huge fangirl moment when she saw 18-year-old Alessia Cara's acoustic cover of her hit song "Bad Blood" on the BBC Live Lounge.
People cover Taylor songs on YouTube all the time, but Alessia's version of "Bad Blood" had the pop star freaking out, telling the young singer "YOU'RE AMAZING" over Twitter!
Check out Alessia Cara covering "Bad Blood" below
Have Your Say
What did you think of Alessia Cara's version of "Bad Blood?" Is it better than the original? Let us know in the comments section below!