Hayden Panettiere would have turned 37 today. The actress had plans to celebrate her birthday in Germany with her 11-year-old daughter Kaya.

Her former partner, Wladimir Klitschko, who is Kaya's father, paid tribute to Panettiere on Instagram. He expressed gratitude for the outpouring of love and support from her fans and friends.

Further details about Hayden Panettiere's life and career are available from the source, along with a tribute from Wladimir Klitschko and related video.