Femmes Fatales, Plainfield High School’s varsity univoiced show choir, has built a strong reputation for excellence, consistently earning finalist placements and Grand Champion titles at competitions throughout the region. In 2025, the ensemble made history by capturing their first-ever ISSMA Large Univoiced State Show Choir Finals Grand Championship, along with the prestigious Best Overall Vocals caption. Demonstrating their versatility, Femmes Fatales also competed as a concert choir in 2024, earning 3rd Place Overall at the ISSMA Univoiced Concert Choir Finals in May.