Stars at the Mercedes Benz L.A. Fashion Week

Rosario Dawson

Guests like Rosario Dawson, Sean Penn and Ali Hewson gathered at the Project7ten green home in Venice to drink Acacia cocktails and celebrate the second edition of Edun and One's ONE T-shirt campaign. Hostess Helena Christensen, who photographed celebrities in the shirt-proceeds from the sale of which will help fight AIDS-eyed her work while Josh Hartnett spent most of his time outside the house on the patio. "I was so excited when the One campaign first came out," said Dawson. "I went online and joined right away."

-With reporting by Elizabeth Jenkins, Kwala Mandel, Jennifer Muirhead and Lindzi Scharf

Megan Fox

Transformers

star Megan Fox perused the hot cars on display inside Smashbox Studios before finding her front row seat at the Coco Johnsen Spring 2008 show.

Juliette Lewis and Giovanni Ribisi

Juliette Lewis

and Giovanni Ribisi helped Ribisi's twin Marissa celebrate the debut show for her Whitley Kros fashion label. "I've never seen a fashion show before," Marissa's husband Beck-who provided the soundtrack for the catwalking-told reporters.

Kristen Bell

Kristen Bell

joined a bevy of Elsie Katz Couture beauties who were eager to view the company's Spring 2008 collection. Constance Marie, Shannyn Sossamon, and Autumn Reeser sat front row as designer Donna Baxter unveiled a cascade of ruffles, blossoms, and beadwork inspired by Antoine De Saint-Exupery's book, The Little Prince. Front row attendees walked away from the runway and headed home with sixtieth-anniversary editions of the book.

Jaime Pressly

After a busy year that included the birth of her first child and a big Emmy win, multi-tasker Jaime Pressly introduced the Spring/Summer 2008 collection of her J'Aime fashion line at Hollywood hot spot Blvd 3. The show, which was attended by Pressly's My Name is Earl castmates and featured tunes by her DJ fiance, Eric Cubiche, marked the expansion of Pressly's brand as she broadens her traditionally simple knit line into a comprehensive ready-to-wear collection.

Sara Ramirez

Sara Ramirez

made her way to the Smashbox Studios main tent for Sue Wong's visually arresting range of frocks. Modern art masters Matisse, Miro and Vasarely were the muses for the designer's Spring 2008 collection. Three jazz dancers in black cocktail dresses and fedoras opened the show, followed by 75 looks ranging from bridal gowns to bubble dresses.

Nicky Hilton

Fresh-faced models with ringlets bounced down the catwalk at Nicky Hilton's Spring/Summer 2008 show. A bright white space allowed the playful shapes and colors in Hilton's fairytale-themed collection to pop on the cherubic models. Smashbox makeup artists complimented Hilton's designs by applying rosy cheeks and candy apple lip gloss to each model.

Kelly Carlson

Despite getting off to a very late start, the eagerly anticipated Randolph Duke show brought the house down. Inside the main tent at Smashbox Studios, Duke received cheers from show-goers like Kelly Carlson before the show even got started and finished up with a standing ovation. The red carpet maestro created 73 looks for his return collection, which was inspired by the California landscape.

Ross Matthews and Jesse James

Tonight Show

regular Ross the intern was on hand to catch the reaction of Jesse James-who is married to leading lady Sandra Bullock-as adult entertainer turned runway model Jenna Jameson opened Heatherette's Route 66: California or Bust show at Smashbox Studios, Culver City. Socialites Brittany Gastineau and Lydia Hearst followed her lead by walking in the quirky show, where neon colored tires aligned the stage.