These two preteen girls went to New York Comic Con in cosplay finery Sunday, but they didn’t expect to be on stage themselves.

Before the start of a panel with the cast and crew of the Fox TV series “Gotham,” warm-up host Michael Daniels spotted the 11-year-old dressed as Elsa from “Frozen,” and promptly invited her and a friend to the stage to lip sync the film’s mega-hit, “Let It Go.”

What ensued was a delightful performance in which the girls gained more confidence as the song went on, and the audience responded accordingly: with some major applause.

H/T Daily Dot