Taylor Swift brings supermodel friends onstage

Taylor Swift performed with her "best friends" Gigi Hadid and Martha Hunt onstage last night.

The 25-year-old singer surprised her fans in Detroit and brought the two supermodels onstage to strut their stuff to 'Style' with her, as part of her '1989' world tour, and took to Twitter afterwards to express her love for the two beauties who also star in her 'Bad Blood' video.