Taylor Swift was joined by her Bad Blood music video co-star Ellie Goulding at the singer's 1989 concert in Texas this weekend.
Taylor invited Ellie on stage to sing the British pop singer's hit song Love Me Like You Do for nearly 60,000 fans at the AT&T Stadium.
During the concert, Ms Swift described her as "one of my really, really, really dear friends."
Over the course of Taylor's 1989 world tour, she has welcomed numerous celebrity special guests to sing alongside her including Selena Gomez, Mick Jagger and Wiz Khalifa.
The 25-year-old singer has a handful of North American dates left before she heads to China and Australia.