Halsey gave a chilling performance at the MTV Movie Awards as she performed her hit single "Castle" from The Huntsman: Winter's War [1] soundtrack. After being introduced by the movie's stars, Chris Hemsworth, Charlize Theron [2], and Jessica Chastain, the singer had a real-life Elsa moment as she brought Winter to Los Angeles with a little bit of fake snow. See the full performance above and then check out all the trailers for the upcoming film [3].