Photo of Danielle Haim, Taylor Swift, Nelly and Este Haim; by Dilip Vishwanat


After recent guest appearances by Steven Tyler and Mick Jagger, Taylor Swift on Tuesday night brought her 1989 Tour to St. Louis' Scottrade Arena, with Nelly on hand to perform his 2002 hit "Hot in Herre."

While it marked the rapper's third time since 2011 joining Swift on a tour stop, last night's was particularly interesting because the pop star and her opening act HAIM sang backup and danced for the performance.

Watch video of the performance below.