Hayden Panettiere

THG is counting down the 100 Hottest Bikini Bodies of 2012.

From now until the end of the year, we'll be paying tribute to the hottest of the hot with bikini photos galore. The competition is guaranteed to be sweltering.

Ashley Hebert bikini pics were honored to close out last week. Keeping the smoldering countdown going at #95: Nashville star Hayden Panettiere!

At age 23, Panettiere already has an impressive career resume that dozens of film and TV roles, most notably her starring turn on Heroes (2006-2010).

The 5'2", nicely-toned petite beauty, who has racked up many endorsement deals and magazine spreads as well, recently signed on for ABC's new series Nashville.

We can't wait for it. Click to enlarge some more photos of Hayden Panettiere below, and check back a bit later to see THG's Hottest Bikini Body #94 ...

Hayden Panettiere, Brody Jenner and Usain Bolt are among the many celebrities turning another year older and wiser today. Happy birthday, all!

After a number of roles as a child star, Hayden leaped onto the small screen (and into fanboys' hearts) as the amazing Claire Bennett in Heroes.

Now 23, she returns to TV this fall in ABC's Nashville.

Brody Jenner, 29, is best know for getting caught up in the web of drama that was the hit MTV show The Hills for a good couple of seasons there.

He's kept a lower profile of late than his many famous siblings (Kylie and Kendall Jenner) and step-siblings (Kourtney, Khloe and Kim Kardashian).

Still, we see a star-studded night out in Hollywood in his future.

Jamaican track star and fastest man ever Bolt, 26, just won three more Olympic gold medals in London to bring his career total to an amazing six.

Interestingly, Brody's father Bruce Jenner called out Bolt this month after the sprinter claimed he's the best athlete to live. In any case, he's pretty close.

Also celebrating a birthday today: Sex and the City's Kim Cattrall (56), Google co-founder Sergey Brin (39) and country star Kenny Rogers (74).

The 2012 CMT Awards didn't merely pit country singer against country singer across a broad spectrum of categories.

It also set up an intense fashion face-off between a hero and a vampire.

That's right, both Hayden Panettiere - who will show off her own singing voice on the upcoming ABC drama Nashville - and Ashley Greene walked the red carpet at the event, each looking pretty and each angling for your vote. But who will actually get it?

Compare. Contrast. Decide.

Selena Gomez hosted the 2011 MTV Europe Music Awards Sunday.

Hayden Panettiere was among the notable celebrities on hand.

Which of these two gorgeous ladies was the best dressed, however? That's the focus of this couture comparison. Previously, we featured Justin Bieber and Adam Lambert in a similar poll. Now it's time to pit the Bieb's girl against a formidable foe.

Vote for your favorite style star in the Fashion Face-Off below!

Hayden Panettiere and Scotty McKnight are dating, according to new reports.

Of course, reports also linked her to Mark Sanchez ... McKnight's teammate.

Who knows if this rumor is any more accurate (Hayden's not dating Sanchez), but Us Weekly says she's dating McKnight, Sanchez's childhood friend.

"I'm a huge Jets fan and became very good friends with Mark and his buddies," the actress said June 2. "I've always had a lot of dude friends."

"I'm into sports so we have a lot in common."

Whether he's dating Hayden or not, Scotty McKnight was drafted in the seventh round of the 2011 NFL draft out of the University of Colorado.

It remains to be seen whether the lockout will cancel the NFL season this fall, but he won't be locked out of Hayden's bedroom ... or something.

[Photos: WENN.com]

Hayden Panettiere was recently seen out and about with New York Jets quarterback Mark Sanchez, but the actress says the two are simply good friends.

"I swear I'm not dating him at all. Honestly. I'm a huge Jets fan and became very good friends with him and his buddies," Hayden told Us.

"I've always been that girl who has a lot of dude friends. I'm into sports so we have a lot in common, but no, definitely 100% not dating."

"There's genuinely, absolutely nothing going on."

Panettiere and Sanchez have shared a few laughs over the recent relationship rumors, the 21-year-old actress tells the gossip publication.

"Every person that I stand next to in this industry, I'm going to be linked to - that's just inevitably the way it goes," the Scream 4 star says.

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Mark Sanchez has guided the New York Jets to back-to-back AFC Conference Championship Games. But questions remain about the quarterback's decision-making.

Both on and off the field, apparently.

Cameras captured Sanchez with Hayden Panettiere last week, as Rumor Fix reports they entered a hamburger restaurant together and left smiling.

"They seemed very close and very happy," a witness says, although someone close to Panettiere claims the two are, you guessed it, "just friends."

Hayden Panettiere split with boxer Wladimir Klitschko earlier this month, while Sanchez has enjoyed his run as a bachelor in NYC. He's been linked with Jamie-Lynn Sigler and Lindsay McCormick, among others.

Move over, Leonardo DiCaprio and Bar Refaeli. Another celebrity power couple has just broken up in Hayden Panettiere and Wladimir Klitschko!

The 35-year-old boxer told People today: "We had a great time together, but it's not easy to manage a relationship between two continents."

Hayden Panettiere also confirmed the breakup, adding:

"Even though we've decided splitting up is best, we have an amazing amount of love and respect for each other and remain very close friends."

Klitschko, the reigning IBF, IBO and WBO heavyweight world champion, repeated that physical distance was the biggest stumbling block for the couple.

Not to be confused with the size difference.

The Scream 4 star and her man, who dated for two years, most recently appeared together at the Tribeca Film Festival for the premiere of the new documentary Klitschko, about Wladmir and his brother Vitali's boxing careers.

[Photo: WENN.com]

Hayden Panettiere says people are ALL about asking intimate questions when talking to her. Specifically, what's it like in bed with Wladimir Klitschko?

You know, given the obstacles and all.

The 5'1" actress and her boxer beau, who towers over her at 6'6", get this a lot apparently. But instead of shying away from the questions, she obliges:

On Ellen this week, Hayden discussed this occurrence: "He is quite a bit bigger than me. I get the prudest people come up to me, and they're like 'Does it work?'"

Yeah, it works. We find a way. Where there's a will, there's a way!"

A shocked DeGeneres couldn't believe fans would ask Panettiere about her sex life but the Scream 4 actress replied that they do, and quite often in fact.

"They do, and they're very conservative people most of the time. They just have to know. Like have to know, 'I just have to ask you this question!"

DeGeneres said she found the personal question "crazy and rude," but Hayden Panettiere dismissed it by saying, "I don't mind it. I find it amusing."

That's one word for it ...

[Photo: WENN.com]

Below, LeAnn Rimes and Hayden Panettiere go toe-to-toe in a fierce fight for fashion supremacy. Who will prevail? That's for you to tell us. Ding, ding!

Rimes may or may not be engaged to Eddie Cibrian, but there is little doubt she looked fab in a Elizabeth and James dress on a night out in L.A.

Meamwhile, the former Heroes star and current Wladimir Klitschko boo paired a green version with a leather jacket for his match in Germany.

Who wore it better?