Kristen Bell joins fellow Heroes costar Hayden Panettiere at Old Navy’s Celebration of “New Year, New Old Navy” on Thursday at NYC’s Eyebeam Atelier (a not-for-profit arts and technology center).

“We’re launching more than just a new line,” said Old Navy spokeswoman Rebecca Weill. “We’re celebrating, really, a whole new Old Navy. We’re more fashion-forward and on-trend than ever before but don’t worry - we still carry all the great basics that customers know and love.”

Old Navy… Trendy?!

Earlier this week, Kristen, 27, was seen beaming while out with funnyman boyfriend Dax Shepard walking down Hollywood Blvd. together. More Here! »

Heroes hottie and Gossip Girl star Kristen Bell departs from LAX Airport in Los Angeles, Calif. with Veronica Mars co-star Ryan Hansen on Tuesday.

Where’s boyfriend Dax Shepard?

15+ pictures of Kristen Bell bouncing out of LA… More Here! »

Gossip Girl star (and Heroes hottie) Kristen Bell visits a Los Angeles office for about an hour before heading to the gym on Wednesday.

Dressed in her exercise clothes, Kristen, 27, made her way back to the car with a mouth full of a “Smart Monkey” cereal bar. She also texted pals on her Blackberry Curve.

Earlier this month, Kristen snuggled up with actor Dax Shepard during New Year’s.

10+ pictures inside of smart monkey Kristen Bell… More Here! »

Heroes hottie (and Gossip Girl narrator) star Kristen Bell heads to a Los Angeles cafe with a female friend (step-sister?) and her baby.

Kristen, 27, was seen playing with the baby and helping the mother load the baby into the car. She even held the diaper bag!

Unfortunately, all new episodes of Heroes or Gossip Girl have been exhausted.

The official website for her upcoming movie is now online: Forgetting Sarah Marshall. The comedy romance, which also stars Bill Hader, Jonah Hill and Paul Rudd, is set for an April 18 release.

Synopsis: Devastated Peter (Jason Segel) takes a Hawaii vacation in order to deal with recent break-up with his TV star girlfriend, Sarah (Bell). Little does he know Sarah’s traveling to the same resort as her ex … and she’s bringing along her new boyfriend. More Here! »

Diamonds weren’t the only thing shining at this benefit!

Kristen Bell seemed to have an extra sparkle at the Diamond Information Center and InStyle luncheon at the Beverly Hills Hotel on Thursday in Beverly Hills, Calif.

The 27-year-old Heroes hottie has recently been cozying up with actor Dax Shephard, who just turned 33 the day before New Year’s. More Here! »

New couple Kristen Bell and Dax Shepard ring in the new year together, sharing a passionate kiss on the beach in Miami, Florida on Tuesday.

The lovebirds didn’t hide their lust for each other as they repeatedly stopped to kiss while strolling on the water’s edge.

When Kristen, 27, and Dax, 32, realized they were being photographed, the couple retreated to their hotel aided by a hotel staff member driving a golf cart.

10+ pictures inside of Dax and Kristen’s steamy kisses… More Here! »

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Kristen Bell and actor pal Dax Shepard take her Saturn SUV in to be serviced on Friday in Los Angeles, Calif.

The Heroes hottie then hopped into Dax’s pickup truck and the couple headed for a bite at Vivian’s Cafe before returning to MasterCare Car Service to retrieve K-Bell’s car.

Kristen, 27, refuses to talk about her personal life and has not spoken about her relationship with Dax, 32, who previously dated Kate Hudson. If there’s anything to talk about in the first place! More Here! »