Taylor Swift and Idina Menzel perform epic duet of 'Let It Go' from 'Frozen'

Taylor Swift has performed with many guest celebrities and musicians during her 1989 World Tour, but one of the most electric was her rendition of Let It Go with Frozen's Idina Menzel.

Menzel wore a dress reminiscent of Elsa's glistening blue gown and Swift dressed up as the lovable snowman Olaf while performing in Tampa, Fla. at the last show of Swift's U.S. tour on Saturday. Menzel belted out the first few lyrics of the hit song she originally performed for the movie until the two took off their costumes and Swift joined in to finish the number.

"Frozen totally happened tonight. And 55,000 people sang 'Let It Go' so loudly, it nearly took my breath away," Swift wrote on Instagram.

Swift later tweeted about the Frozen sing-a-long.

The Walt Disney Company is the parent company of Walt Disney Animation Studios and this station.