Katie Grgecic is an actress, singer, and dancer. At the age of five, Katie discovered her love for performing. She is best known for her work as Callie Laskey in Happy! (2019) and her performance as Brigitta von Trapp in the North American tour of The Sound of Music (2017-2018). Katie was the recipient of a 2018 BroadwayWorld Regional Award (Best Actress) and a 2017 National Youth Arts Award (Outstanding Supporting Actress Junior Division).