See Natalie Maines' Brazen Duet With Taylor Swift on 'Goodbye Earl'

Taylor Swift is living out her ultimate mix tape with the 1989 World Tour, whose setlist had made room for more than 20 special guests since mid-May.

Last night, during the middle of a five-show residency at L.A.’s Staple Center, Swift brought Natalie Maines onstage for a surprise duet of “Goodbye Earl.” The pair…