Why was Mischa Barton at the the Bebe Spring 2007 runway show at  Smashbox? And why was she smiling?

Because she's currently the face of the U.S. fashion label, that's why. So basically, she's gotta be there, wearing a Bebe B/W silk dress.

In fact, if Keds has a runway show, she'll be there too.  She also appears in their ads.

But other than  Miss Mischa, there were very few (okay, none) of the young  actresses featured in fashion magazines as cutting-edge trend-setters at the Mercedes-Benz Spring '07 Fashion Week at Smashbox Studios. No Nicole Richie. No Mary-Kate and Ashley. No Kate Bosworth. No Scarlett Johansson. No Kirsten Dunst. No Charlize Theron, who attended last year.

And there was certainly no one shopping for an Awards Season '07 wardrobe.

Rock and Republic's show at Area, unlike last year's event which featured Chrissie Hynde and the Pretenders and a real runway show (not just video of their NY event) and stars like Posh Spice and Katie Holmes, didn't even attract the promised guests like Paris and Nicky Hilton.

But it did draw Nick Cannon, Frankie Muniz, Kelly Hu, Jeremy Piven, Eric Benet, Brittany Snow, Dominique Swain, Jonathan Silverman, Elisha Cuthbert, and Paris’s party pal Kim Kardashian.

Paris, Nicky, Justin Timberlake, Cameron Diaz, and Eddie Murphy did turn up at Social Hollywood for the William Rast show and party. Justin, JC Chasez, Lance Bass, Maroon 5’s Adam Levine and will.i.am from the Black-Eyed Peas even performed for the packed house. It was so hot, fire marshalls even closed it down. Woo-hoo! Good times.

The Dressed to Kilt show on Saturday boasted Patricia Arquette, Thomas Jane, Linda Hamilton, Natasha Henstridge, and Kimberley Stewart. Sofia Milos was one of Sue Wong’s front row faces on Sunday night. Louis Verdad's overcrowded show also drew Alexis Bledel, Randy Jackson, and Garcelle Beauvais. Diana Ross turned up at Meghan’s collection and Angela Bassett was watching Dina Bar-El’s show.  And Daniella Clarke’s Frankie B runway show was watched by… Taryn Manning.

Kevin Hall's Thursday night show was attended by Joely Fisher, Milos and the Oscar-nominated "Sideways" babe, Virginia Madsen and Sinbad.

Sinbad?

Photo Credit: Mischa models Bebe. Why? Because she has a darn good contract with the company, that's why.
Amy Graves/WireImage