Taylor Swift brought the U.S. leg of her 1989 Tour to a close Saturday night in Tampa, Fla., with a little Halloween spirit and — surprise! — a special guest, inviting Idina Menzel onstage for a performance of “Let It Go.”
After Swift welcomed Menzel to the stage, the two artists let the storm rage on in costume, with Menzel donning a sparkly Elsa dress and Swift becoming the snowman Olaf. “Frozen totally happened tonight,” Swift wrote on Instagram. “And 55,000 people sang ‘Let It Go’ so loudly, it nearly took my breath away.”