The 23-year-old musician invited her pal on stage to perform his hit song “I Want Crazy” for a sold out crowd of more than 14,000 fans.
Also pictured: Ed Sheeran in costume backstage with Taylor after the show.
“Show highlight: @edsheeran dressed like a clown and danced the choreography to We Are Never Ever Getting Back Together. Quite the finale.” Taylor tweeted after the show.
Watch Taylor Swift and Hunter Hayes performance of “I Want Crazy” below:
Taylor Swift & Hunter Hayes – “I Want Crazy”