Yet another name has been added to the list of celebrities that have made an appearance at a Taylor Swift concert.
After teasing a 'surprise' for the fans, Swift revealed that her best friend and Grammy winner Lorde would be joining her onstage.
The two singers paired up to perform a duet of Lorde's hit song "Royals."
Along with Lorde, The Weeknd, Nick Jonas, Heidi Klum and even the US Women's Soccer Team have all been apart of Swift's latest concerts.
Who would you want to see join Taylor Swift onstage?