The cold definitely did not bother Ciara Renée and McKenzie Kurtz on February 18, as they took their first Broadway bows as the new leads of Frozen. Renée replaced Caissie Levy as Elsa and Kurtz replaced Patti Murin as Anna. They weren't the only new cast members; Ryan McCartan also started his run as Hans on the same night, replacing Joe Carroll in the role. It was also a momentous evening for the new cast, as Renée and Kurtz got to debut a new song for the show called "I Can't Lose You," which was one of several new changes that were just made to the long-running Robert Lopez and Kristen Anderson-Lopez musical. Frozen, produced by Disney Theatrical, is currently running at the St. James Theatre. See photos of the new cast below.