Hayden Panettiere Loves Kung Fu Fighting

Hayden Panettiere slips back into her cheerleading outfit on the LA set of Heroes on Wednesday (Panorama High School, to be exact). Costar Sendhil Ramamurthy was also spotted back on set… with a broken nose! For the show, or in real life? Don’t know –

TV Guide let the cat out of the bag that Hayden was the one who nearly came to blows with a reporter on the red carpet.

“It was the unbreakable Hayden Panettiere who threatened to ‘kill’ a staffer from Us Weekly over something she wrote about her in a recent issue. (Sources have since confirmed that it was this item that had HP’s barely legal panties in a bunch.) Just when it looked like Hayden was about to pull a Sylar on said reporter’s skull, her quick-thinking publicist grabbed her and scolded, ‘Not on the red carpet.’ It was a classic Hollywood moment — and one I predict will be streaming all over the Internet by week’s end.”

Yikes.

25+ pictures inside of Hayden back as Heroes‘ favorite cheerleader…