Taylor Swift Dresses Up As Olaf and Sings ‘Let It Go’ With Idina Menzel For Finale Of U.S. Tour [WATCH]

Taylor Swift had every star imaginable join her on stage during her 1989 tour, but she definitely saved the best for last at Raymond James Stadium in Tampa, FLorida .

Taylor brought her 1989 U.S. tour to a close with a Frozen Finale especially for Halloween. Dressed as the lovable snowman, Olaf, the-25-year-old brought Idina Menzel out on stage as ice queen Elsa before the two belted out the films anthem Let It Go.

Idina walked out on stage in a gorgeous blue gown and began singing “Let It Go!” Naturally, Taylor was by her side in an epic Olaf costume.

About midway through the song, both ladies ripped off their costumes to show their sexy regular performance outfits and finished the song while the crowd — over 56,000 people — sung along.

As they let the audience finish the song with a rousing 'the cold never bothered me anyway', Taylor ripped her plump body and hapless head off to reveal her tiny signature sequinned dress.

The 44-year-old Menzel meanwhile need a little assistance from two reindeer to whip off her Arendelle attire, stepping out in a sexy pair of tight black trousers and corset top.

Gushing over the experience on Twitter, Taylor admitted it had been quite a Halloween.

She wrote: "Sharing a stage with @alessiacara and @idinamenzel was the perfect way to end this amazing chapter. Thanks ladies."

Taylor's tour has been filled with surprise special guests including Mick Jagger, Ricky Martin, Pitbull, Ellie Goulding, Miranda Lambert, Keith Urban, Nelly, Steve Tyler, Leona Lewis, Wiz Khalifa, Avril Lavigne, Selina Gomez, Justin Timberlake, Beck, John Legend, Alanis Morissette, Fetty Wap, Mary J Blige, Jason Derulo, Lorde, Nick Jonas, Haim, The Weeknd, Jason Derulo, Imagine Dragons, and even Phoebe Buffet from Friends.

But she may have given away who her final US guest would be when she sang Style dressed as the summer loving snowman from Disney's 2013 megahit.

Before the show, started, Taylor actually warned the crowd of her epic show to come, as it was her last in the US of her tour. “Here’s the deal. I may have had a good feeling about you before I even got on stage. So I might have planned a few things for this evening,” she said, according to Tampa Bay Times.

Taylor will now head to Asia, before hitting Australia where the tour will finally come to an end in December.

Watch the video below.

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