Hayden Panettiere arrives at the 66th Annual Golden Globe Awards on Sunday, Jan. 11, 2009, in Beverly Hills, Calif. (AP/Matt Sayles)

"Heroes" pin-up Hayden Panettiere is about to send her lusty fans into overdrive after revealing she's totally naked in her new film.

The pretty actress insists there were no body doubles used or tan body stockings in place on the set of I Love You, Beth Cooper - that's all her on the big screen.

The 18 year old tells Eonline.com, "I was really naked. I had these little sticky petals on my boobs, but that was about it."

Images: Top Nude Scenes of 2008

And the sexy star insists her parents will have no trouble with her naked scenes in the coming-of-age movie, which opens next month: "My dad calls me such an exhibitionist. He always says, 'God, even when you were little, you were such an exhibitionist!'"

But Panettiere won't be showing off absolutely everything just yet.

She adds, "I'm cool with my body, and I'm cool running around undressed and all that stuff, but there are just certain things that not everyone needs to know, that you need to keep somehow private and personal to you.

"But you never know... I could be 30 years old and just be like, 'Screw it, I want to take it all off. I better take a picture of this baby before it all goes.'"