Taylor Swift has always had strong Halloween game, and her 1989 tour has been an epic series of concerts with a revolving door of talked about special guests. It seemed like she would never be able to top herself on either thing.

And then she had a concert in Tampa on Halloween. Where she dressed as Olaf from Frozen. And her dancers dressed by reindeer (so most likely, Sven). And then Idina Menzel--ELSA HERSELF--walked out in the famous blue dress and the two belted out Let It Go together.

Now, there's really no topping Taylor Swift.

Tags: Taylor Swift Idina Menzel