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Hayden Panettiere

Anthony J. Causi / Splash News

Hayden Panettiere wasn't just a cheerleader on Heroes—she's one in real life, too!

The 25-year-old actress was super into showing her support for fiancé Wladimir Klitschko in Saturday's heavyweight title fight against Bryant Jennings. The fight was exciting (Hayden's man won!) but the real highlight of the match was the Nashville star's ringside enthusiasm!

Hayden pulled a variety of funny faces as Wladimir threw some tough punches, and while it might have been a little stressful to watch, she looked like she was enjoying herself! That's probably because, as she recently revealed on LIVE with Kelly and Michael,  "You know what, I've learned that none of my reactions can change what's gonna happen in the ring!"

Hayden Panettiere

Anthony J. Causi / Splash News

And as long as the 39-year-old Ukrainian athlete isn't injured too badly, all will be OK in the Panettiere-Klitschko home. After all, what really matters to Hayden and Wladimir is their relationship and taking care of their 4-month-old daughter Kaya.

Since welcoming their little girl in December, the first-time parents "have so much more of a connection," Hayden told Kelly Ripa and Michael Strahan. "When you're with somebody, I think it's great when you have your own life, they have their own life, and you meet gracefully in between. But then the longer you know them the more you're attached to them, and then something that bonds you is a child. when you have a child together, there's nothing else that connects you like that—forever! For better or for worse."

Hayden Panettiere

Anthony J. Causi / Splash News

Of course, Hayden is totally confident in Wladimir's ability to hold his own. "I've got all the faith in the world in him, and in fact, I think being a father has made him even more aggressive and dangerous," she told Kelly and Michael, noting that Kaya's dad is now "fighting for something, not for himself."

As Hayden put it, he's a total "papa bear"—in and out of the ring!

Hayden Panettiere

Anthony J. Causi / Splash News

Hayden Panettiere

Anthony J. Causi / Splash News