Hayden Panettiere Celebrating the 40th anniversary of Earth Day with Wladimir

Celebrating the 40th anniversary of Earth Day, Hayden Panettiere was spotted with the cast of Avatar at a party in Los Angeles last night. Joined by her hunky boyfriend Wladimir Klitschko, the “Heroes” hottie looked lovely in a black dress as she arrived at the JW Marriott LA Live.As for her drastic change from long blonde locks to a cropped haircut, Hayden said she’s tired of her squeaky clean image. “I’m typically a very fiery person but I just feel like cute and blonde and little is just so one category and one thing and changing my hair color, I feel like I don’t have to overcompensate so much for the fact that I don’t like being called cute for anything like that – especially being all 5ft 2 of me.”