Taylor Swift Sings 'Hot in Herre' with Nelly & Haim! (Video)

Taylor Swift looks elated to be performing alongside Nelly during her latest The 1989 World Tour surprise performance on Tuesday (September 29) at Scottrade Center in St. Louis, Mo.

In addition to bringing out the famed rapper to sing his song “Hot in Herre,” the 25-year-old singer also brought her BFFs from Haim on stage to be the backup dancers alongside her!

“The highlight of our friendship thus far @HAIMtheband. PS WE LOVE YOU @Nelly_Mo,” Taylor tweeted with the below video.

“OMG DID WE JUST DO THAT!!!!???? Here’s to a 100000000000000000000 more EPIC HIGHLIGHTS!” Haim tweeted.

Click inside to watch another video clip from the performance…