Packing some heat, Hayden Panettiere looked ever the femme fatale while on the set of her hit show Heroes, which was shooting in Los Angeles on Saturday (June 21).

Also on hand was boyfriend Milo Ventimiglia, who wore an all black ensemble with his hair slicked back as he filmed a few action sequences.

Always happy to get away from her busy professional career to take in a little fashion, Hayden Panettiere was on hand at the US Launch Party for 16-year-old Russian designer Kira Plastinina on Saturday night (June 14).

While there, the 18-year-old Heroes hottie posed for photographers solo before heading inside and mingling with fellow celebs such as reality star Khloe Kardashian.

Lindsay Lohan got a job. (Celebslam) Marisa Miller: half naked cowgirl. (CollegeHumor) Tori Spelling is popping her baby out right now. (DListed) Hayden Panettiere cut her hair short. (Pink is the New Blog) Jennifer Aniston and Diane Keaton are BFFs....

Filed under: Let's Get This Party Started

TMZ.com: 18-year-old Hayden won't talk about dating her much older co-star Milo Ventimiglia, but had no problem revealing she's had a little lady-tongue action. Just when Hayden Panettiere couldn't get any sexier, she goes and tells the UK edition of Glamour... Read more

She’s been all over the world as of late, from British Columbia, to London, to LA, and finally Hayden Panettiere will be staying in one place… at least for a little while.

The blonde whale lover was spotted on the set of her hit NBC series “Heroes” yesterday as filming for Season 3 got underway.  And she wasn’t alone.

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Anyone remember Paris Hilton? Anyone? Ha ha, just kidding. Who could forget all that herp? What're you looking at above are pics of Paris and Benji Madden that sparked speculation she's knocked up with a devil spawn. Fortunately, for humanity's sake, those claims have been deemed illegitimate - like the child she'll eventually have at a later date. Us Magazine reports:

The heiress, 27, sparked blog rumors when she wore a green satin slip-dress to Crown Bar in Los Angeles Wednesday.

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As previously reported by the Gossip Girls, Hayden Panettiere was spotted catching a flight out of LAX earlier this week.  And it turns out she was headed across the pond.

The “I Love You Beth Cooper” babe was spotted at the Glamour Woman of the Year Awards last night in London, England.  And she looked stunning in a ruffled red dress with a pair of sparkly gold peep-toe heels.