Taylor Swift and B.o.B Perform 'Both of Us' in Atlanta

Taylor Swift fans were in for a treat when her “Red” tour touched down in Atlanta on Friday. In addition to performing her hits, she surprised the sold-out crowd at Philips Arena with special guest B.o.B. The two performed their collaboration “Both of Us” off Bobby Ray’s album Strange Clouds.

“So cool that @bobatl came to the show last night and surprised the Atlanta crowd with ‘Both of Us’! Insanely fun,” tweeted Taylor.

America’s sweetheart previously brought out B.o.B to perform “Airplanes” during her concert in Dallas in 2011. Just last month, Nelly joined her onstage to perform “Hey Porsche” at her St. Louis show.

B.o.B has just joined the lineup for Wiz Khalifa and A$AP Rocky’s “Under the Influence of Music” tour.

Watch them rock the stage below.