The 25-year-old superstar brought out the duo to perform their hit “Classic.”
Before the guys joined her on stage, Taylor announced that the song “is like the sweetest song a guy could write for a girl.”
After the show, Taylor took to her Instagram to thank the guys for joining her.
“TONIGHT WAS EPIC! @WeAreMKTO showed up and 60,000 people sang every word to ‘Classic’ with us! They’re insane live!! @therealmalcolm @followoller,” she wrote.
Check out the whole performance below…
Taylor Swift Performs With MKTO