Hayden Panettiere Chops Off Her Hair (PHOTOS)

'Heroes' hottie Hayden Panettiere has chopped off all her hair.

The blonde actress recently dyed it, and has since cut chopped it short and gone blonde again. She and her very tall boyfriend, Ukrainian heavyweight boxer Wladimir Klitschko, were at an Earth Day gathering in LA.

She debuted the new 'do slicked back with sideburns pulled down in front of her ears.