Taylor Swift as Olaf & Idina Menzel as Elsa Sing 'Let It Go,' Win Halloween

This happened. This actually happened. On October 31, Taylor Swift couldn't keep it in, although heaven knows she tried, and she welcomed Tony winner Idina Menzel along for the ride! Throughout her 1989 tour, Tay Tay has made a habit of inviting some very special guests on stage for a duet and for those lucky enough to see her in Tampa this Halloween she put together a very special surprise. Swift donned an Olaf outfit, her dancers were reindeers...and then our favorite Broadway supernova appeared in an Elsa ensemble. Screlting and the quick change to end all quick changes ensued. Check out the video of their "Let It Go" below—looks like they're the queens who won Halloween!
 

"The cold never bothered me anyway" *QUICK CHANGE* @idinamenzel #letitgo #1989TourTampa pic.twitter.com/Ua6JcGk8or

— Taylor Swift (@taylorswift13) November 1, 2015