Don’t confuse Hayden Panettiere with fellow former child star and party animal Lindsay Lohan, okay? She’s made it clear she doesn’t want that.

But yet, as celebrity gossip gangsta Perez Hilton observes, she’s already hitting the party scene with abandon, and our favorite rising star has even stolen Lohan’s move - the signature peace sign pose!

Oh well. It could be worse. Right? She could be like Avril Lavigne and spitting everywhere! Here, we see the lovely Hayden Panettiere channeling her inner Lindsay Lohan on the set of her new movie, Fireflies In The Garden. It co-stars Ryan Reynolds and the great Julia Roberts. Can’t wait!

The awesome Hayden Panettiere rocketed to fame as the self-healing cheerleader Claire Bennet on Heroes. But the 17-year-old is just getting started.

Since becoming the focal point of the show’s “save the cheerleader, save the world” plot line, Hayden Panettiere has also started filming a new drama, Fireflies in the Garden, with Julia Roberts, and is gearing up to promote her debut pop album this fall.

“With singing, I get to be myself,” she tells People.

That’s all good. But later this spring, Hayden Panettiere will celebrate another important milestone - high school graduation.

“Thank God!” says the Nyack, N.Y., native. “School was difficult; when you come and go, you miss out on a lot. Cliques are formed and you’re just lingering.”

In L.A., Panettiere has found a new BFF in Rumer Willis, 18.

“I stole my pink belly-button ring from Rumer,” she admits.

Moreover, she’s found a boyfriend in Laguna Beach graduate Stephen Colletti, 21, whom she’s been dating for more than a year - and who used to date Kristin Cavallari. And Lauren Conrad. At the same time. Not sure how we feel about that.

But Hayden and Stephen are so low-key - their big nights out usually consist of dinner and a movie - that the actress even feels guilty about not giving Hollywood gossip sites more to work with.

“I had paparazzi on my street for a while,” she says. “I think I bored them to tears. I’m no fun to watch.”