A lot of celebrities wear the same dresses from time to time. But who will prevail in a fashion face-off featuring foxy Hayden Panettiere and Jessica Simpson?

The Heroes superstar took Manhattan by storm with her very sexy “What Comes Around Goes Around minidress back in September, while Simpson dazzled in a very similar sequined minidress at a Clothes Off Our Backs event in L.A.

Who wore it better, Hayden Panettiere or Jessica Simpson? You tell us!

She’s everywhere!

Following Monday’s Season Two premiere of Heroes, cutie Hayden Panettiere was back on publicity duty as she drops by CNN in N.Y. City Tuesday to tape a special for Larry King Live alongside her fellow NBC cast members.

Looking beautiful as ever in a gorgeous black-and-white mini-dress and Christian Louboutin shoes, the 18-year-old starlet was all smiles despite a grueling schedule that has had her doing press literally all around the world.

Nonetheless, Hayden Panettiere’s tiring schedule has not gotten the best of her — unlike many of her counterparts, Hayden knew just exactly how a lady steps out of a car. You go, girl!! We aren’t surprised she’s setting a good example.

Hayden Panettiere was in full effect at the Emmy Awards last night. Here’s a photo of Hayden in her dress. What do you think? Hit or miss?

To us, Hayden Panettiere looks great in everything! 

Fall may be here, but if Hayden Panettiere has taught us anything, it’s that this change of seasons doesn’t mean that you have to pack up all of your bright summer colors for dark, somber clothes.

Jewel tones are heating up for the season, and turquoise dresses showed up on three famous blondes last week! From Hayden Panettiere’s silk Cynthia Rowley tunic to Cameron Diaz’s shapely DVF sheath to Kelly Ripa’s belted Catherine Malandrino sack dress, this is a color that works for all!

Everyone from Hayden to Vanessa Hudgens has been spotted in the hot hue. If you want to get Hayden’s dress, though, better get ready to fork over $370 at cynthiarowley.com, or a similar belted style, $330 at shopbop.com.

Well, other stores surely sell cheaper alternatives…

As we’re sure you noticed, Hayden Panettiere looked mighty fine on the red carpet for the VMAs. In an exclusive video, Buzznet provides a sneak peak of Hayden getting her makeup done by makeup artist Matin (who also works on celebrities such as Mandy Moore, Amanda Bynes, and Angelina Jolie).

All this goes down a the Neutrogena VAM hospitality suite. CLICK HERE to see the exclusive video of Hayden preparing for the big night!

When 18-year-old cuties like Hayden Panettiere and Vanessa Hudgens collide, and wear the same hot dress, there’s no telling where it will lead.

Except, of course, to a fashion face-off on this fan site.

When Hayden hit the Late Show on her 18th birthday in her Alice + Olivia dress to talk about Heroes, she left us in awe. At the same time, Vanessa (also 18) looked beautiful in the same getup during the High School Musical 2 Australian premiere. That sequined minidress gets around!

Who wore it better, Hayden Panettiere or Vanessa Hudgens?

We’ll go with Hayden in a close one. Given the buzz surrounding the Vanessa Hudgens nude photo scandal, we’re guessing the cute, female half of Zanessa wishes she could wear this again.

What has Hayden Panettiere done by age 18? The better question would be, in the opinion of this fan site, what hasn’t Hayden Panettiere accomplished at the young age of 18?

Think about it. She’s on a hit TV show (Heroes), stars in her own “Got Milk” ad, and has an enviable wardrobe. Speaking of the latter, Hayden Panettiere now has her own eponymous earrings - “The Hayden” - how cool is that?

The actress recently donned the intricately designed 14-karat gold fill double hoops, crafted by jewelry maker Melanie Auld at this year’s Comic Con. Looks like her style is as indestructible as her Heroes alter ego.

NOTE: If you wish to buy yourself a pair of these sexy Hayden Panettiere style earrings, they go for $175 at melanieaulddesigns.com.

Hayden Panettiere might be the youngest hero on her hit TV series, but her world-saving attitude clearly extends far beyond her cheerleader role.

Stepping out for coffee on two recent occasions in L.A., the actress showed her support to Invisible Children, a non-profit charity that brings education and awareness to children in war torn countries.

Hayden Panettiere, who just recently celebrated her 18th birthday, has two T-shirts that benefit the children’s charity. Check it out!

It’s time to say goodbye to skinny eyebrows, and helping you accomplish this task (courtesy of People Magazine’s style section) is none other than our hero, Hayden Panettiere (who likely learned from Lesley Panettiere)!

As People notes, bold brows were all over the fall runways, and now stars like Camilla Belle and Hayden Panettiere are adopting this sophisticated look…

To pull off the style, you need to maintain perfectly groomed brows, but it is not as hard as you think. Step one to clean them up by plucking stray strands.

Try to stick with your natural shape; the point, after all, is to not over-pluck. Get a mini-tweezer that is totally packable - and makes a perfect product for on-the-go touch-ups. Then just add definition and fill in sparse patches with either a brow powder or pencil and you’re good to go!

Hayden Panettiere, in her recent recipe for summer fun, as told to People, made it clear that she was a bikini girl. And from the slew of recent Hayden Panettiere photos we’ve seen this summer, it’s clear she wasn’t kidding!

We’ve already spotted her in an adorable striped Vix bikini with Stephen Colletti, and now she’s hitting the beaches of Malibu (on lunch break from filming Heroes) in this gold-trimmed Lotta Stenson two-piece.

If you love Hayden Panettiere’s bikini and want to wear it as well, People has the skinny: you can snag one for yourself at shopblush.com for $135 (on sale), or get the look for a little less with an Inca bikini at bluefly.com ($79).