Simon Cowell broke down in tears during the live result show of America's Got Talent as Nightbirde made a return. Nightbirde, the singer and cancer survivor, touched the hearts of the judges and audience with her inspiring performance. Throughout her journey on the show, Nightbirde has touched the hearts of millions with her resilience and positivity. Her return to the show brought tears to Simon Cowell's eyes, proving the impact she has had on everyone.