Belles et Beaux, Plainfield High School’s varsity mixed show choir, has proudly represented Indiana as one of its premier performing ensembles for over 50 years. Known for their dynamic performances and consistent excellence, the group has frequently earned finalist placements and captured numerous Grand Champion titles at competitions across the state. In 2024, Belles et Beaux achieved top honors as the ISSMA Large Mixed State Show Choir Grand Champions, also earning Best Overall Visuals and Best Overall Vocals. Continuing their legacy of excellence, they were named 1st Runner-Up in the 2025 ISSMA Large Mixed State Show Choir competition.

Rounding up the 2024 school year, Belles et Beaux took 6th place overall at the ISSMA Mixed Concert Choir Finals competition in May.