Check out these sexy Hayden Panettiere photos from the Heroes set with her looking great as a brunette!  That’s something I didn’t think I’d see anytime soon, but then again nothing surprises me anymore.

So now I guess it really is up to you on how you like Hayden, as a blonde or as a brunette?  Can we expect to see a red-headed look anytime soon?  What are the odds on that…