What happened to Hayden Panettiere's hair?!?!?!

Hayden-Panettiere-short-hair2.jpgNo more long luscious locks for the "Heroes" star.

Hayden Panettiere has made a departure from just changing up her hair color and gone all-the-way with a dramatic super-cropped 'do. She sported the more -- er, sophisticated -- hairstyle at an Earth Day celebration Thursday (April 22) in Los Angeles.