Hayden Panettiere cuddles up to lil’ bro Jansen as they attend the Whaleman Foundation Benefit at Hollywood’s Beso Restaurant last week.

Jansen, 15, just recently completed work on The Lost Medallion: The Adventures of Billy Stone with Sammi Hanratty. The flick, which follows a young Billy and his best friend Allie as they’re transported back in time 200 years, is set to hit theaters in 2011.

Big sis Hayden has been an active supporter of The Whaleman Foundation which promotes research and conservation for dolphins and whales and their ocean habitat.

15+ pics inside of Hayden and Jansen Panettiere… More Here! »

Hayden Panettiere sparkles in a sequined zipped black cardigan as she arrives at the Jimmy Choo for H&M Collection private event in support of the Motion Picture & Television Fund held at a private residence in West Hollywood on Monday night (November 2).

The 19-year-old Heroes hottie, wearing Jimmy Choo for H&M leather pants and carrying the zebra clutch, said at the event, “Tamara [Mellon, Jimmy Choo founder] is so brilliant and such a wonderful designer. Her shoes are incredible. I do my shopping sprees at H&M. I was recently in Italy and instead of going to other stores, I went to H&M.”

The new collection will be unveiled in about 200 H&M stores globally on November 14th and includes the most coveted shoes and accessories.

20+ pics inside of leather pants pretty Hayden Panettiere… More Here! »

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Hayden Panettiere throws back a laugh as she steps out on the red carpet at the 2009 Primetime Emmy Awards held at the Nokia Theatre in Los Angeles on Sunday afternoon (September 20).

The 19-year-old actress wore a one-shoulder red J.Mendel dress, Fred Leighton jewels, Judith Lieber clutch and Bally gold leather platform pumps.

Hayden joined Emmy winner Jon Cryer in presenting Jeff Probst with an award for Outstanding Host For A Reality Or Reality-Competition Program.

P.S. Be sure to enter JJJ’s contest to see Hayden at the Neutrogena Fresh Face Concert THIS weekend!

25+ pics inside of red hot Hayden Panettiere… More Here! »

Neutrogena Ambassadors Vanessa Hudgens and Hayden Panettiere are hooking up with VH1 to spread their love of music!

The Neutrogena Fresh Faces of Music Event benefiting VH1’s Save The Music is an exclusive event celebrating back to school with giveaways, samplings, live music and more! The event will benefit the VH1 Save the Music Foundation.

As a major fan of Save The Music, Neutrogena, Vanessa and Hayden, JustJaredJr.com is giving TEN lucky readers (four tickets each!) a chance to join us at the event!

WHO: Teen starlets Vanessa Hudgens and Hayden Panettiere, Former Miss USA Susie Castillo, singer Jordan Pruitt and JustJaredJr.

WHEN AND WHERE: It all starts at 3PM on Saturday, September 26th held at Jim Henson Studios, 1416 North La Brea Avenue, Hollywood, CA 90028.

HOW TO ENTER: Leave a comment here with a valid email address (will not be published) and TEN winners will be chosen at the end of the contest, which ends on Wednesday, September 23 @ 2:59PM EST. LA-area Only. Enter as many times as you want!!! Good luck!

Hayden Panettiere flashes her pearly whites as she films a scene for NBC’s hit series Heroes in Los Angeles on Wednesday afternoon (September 2).

The 20-year-old actress, who just celebrated her birthday late last month, was also spotted out yesterday afternoon (September 4) with her pup before stopping at a nail salon in Santa Monica, Calif.

This season on Heroes, Hayden gets a new friend in Madeline Zima (you may remember her from A Cinderella Story with Hilary Duff). Madeline will play Gretchen, Claire’s new friend and college roommate.

10+ pics inside of Hayden Panettiere… More Here! »

Neutrogena brand ambassadors Emma Roberts and Hayden Panettiere relax backstage at the 2009 Teen Choice Awards on Sunday night (August 9) in Universal City, Calif.

During the ceremony, the duo presented the Fresh Faces Award surfboards to Twilight’s Taylor Lautner and Ashley Greene.

Next month, Hayden and Emma will join Vanessa Hudgens and Susie Castillo at the Neutrogena Fresh Faces of Music VIP Event, where guests will have an opportunity to meet the foursome, listen to great music, and experience new skincare and cosmetics.

Stay tuned as JustJaredJr.com will be giving away tickets!!!!!

Hayden Panettiere looks gorgeous in a baby pink Zac Posen form-fitting dress as she attends the 2009 Teen Choice Awards held at the Gibson Amphitheatre on Sunday afternoon (August 9) in Universal City, Calif.

The 19-year-old actress completed her grassy carpet looks with sparkling Bulgari jewels. Hayden joined actress Emma Roberts in presenting the Fresh Face Surfboards to Taylor Lautner and Ashley Greene.

The TCAs were hosted by the Jonas Brothers and will air TONIGHT, August 10 @ 8-10PM ET/PT on FOX.

20+ pics inside of Hayden Panettiere… More Here! »