Katherine Heigl began her professional development in entertainment as a child model with Wilhelmina Models, transitioning into acting with early screen appearances that combined television commercials and small roles in scripted productions. She balanced academic studies with acting commitments before leaving high school to pursue performance full-time, building experience in both episodic television and feature work. Heigl expanded her career into roles that required extended collaboration with ensemble casts and long-form shooting schedules, particularly in television drama series. She also moved into production and creative leadership by co-founding a production company with her mother, serving as executive producer on projects she helped develop for both film and series formats. In addition to performance on screen, her work has included voice acting in animated projects.