Good gracious -- the 1989 tour turned up the heat last night.
On Taylor Swift's second night in St. Louis, Nelly gave his hometown a surprise performance of his 2002 single "Hot in Herre" featuring Swift and Haim.
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The highlight of our friendship thus far @HAIMtheband PS WE LOVE YOU @Nelly_Mo #1989TourStLouis pic.twitter.com/3USBBookRg— Taylor Swift (@taylorswift13) September 30, 2015
Nelly is actually a Taylor Swift tour veteran, having previously performed with her in 2011 and 2013.
Professional BFF TSwift brought Haim on stage for the fun on their last night of the tour, because it's just common courtesy to invite your friends to be backup dancers for Nelly.