Taylor sure knows how to treat her friends and her fans right!
It's no surprise that Taylor Swift is pulling out all the stops for her 1989 tour, but she keeps surprising us with all of her special guests.
Two weeks ago in Detroit, Tay Tay brought Dan Reynolds from Imagine Dragons on stage for a duet, and now she's giving her Philadelphia fans something special too!
Taylor not only had her Bad Blood co-stars Cara Delevingne and Mariska Hargitay join her during Style…
[ Video: All Of Taylor's Friends Come Together For Bad Blood ]
But she also invited Echosmith to perform their hit Cool Kids for all of the Swifties in the audience!
We wonder which famous friend Taylor will surprise us with next??
Ch-ch-check out Taylor Swift's Echosmith cover/duet (below)!!!
Tags: 1989, bad blood, cara delevingne, cool kids, dan stevens, echosmith, imagine dragons, mariska hargitay, music minute, style, taylor swift