Hayden Panettiere Dies: Former Fiancée of Wladimir Klitschko Passes Away at 36 (12 Photos)

Hayden Panettiere was 36 years old. She rose to fame starring in the hit TV series "Heroes" and "Nashville." She was also previously engaged to Wladimir Klitschko, with whom she shares a child. No cause of death has been disclosed.