NY Fashion Week: Day 4

Bar Refaeli and Justin Timberlake

Israeli supermodel-and Sports Illustrated's 2009 Swimsuit issue cover-girl-Bar Refaeli left the catwalking to the other models and joined Justin Timberlake backstage at his fall 2009 William Rast fashion show.

Jessica Biel and Emile Hirsch

"I'm excited for the show," said Jessica Biel, who took a prized position at boyfriend Justin Timberlake's William Rast show while a bodyguard held tabloid reporters at bay. Giving the fashion crowd a sneak peek at the line's fall collection in a black studded jacket, Biel sipped on a glass of rose and chatted with actor Emile Hersh before the show kicked off. After Justin took his final bow with William Rast co-founder Trace Ayala, he and Biel retreated to the Mercedes-Benz lounge to celebrate.

Gerard Butler

"Would you wear that?" Gerard Butler asked the little girl sitting next to him when a model strutted past in a fringe motorcycle jacket at the William Rast show. The hunky actor enjoyed himself during the show, singing along to a cover of the Rolling Stones' "Gimme Shelter" and checking out the models.

Molly Sims and Milla Jovovich

Molly Sims

and Milla Jovovich (both in Donna Karan) were front and center when Donna Karan went back to basics for her Fall 2009 show, held south of Bryant Park at the Stephen Weiss studio. Karan's latest collection showed off her legendary talent for feminine draping and her love of soft jersey fabric and bodysuits.

NY FASHION WEEK VIDEO: Donna Karan

Katrina Bowden

30 Rock

's Katrina Bowden has been busy on the fashion scene this week, hitting shows like BCBG Max Azria and Nicole Miller. Here she joined Shenae Grimes and Paris Hilton to view the latest collection from designer Stacey Bendet at the Alice + Olivia presentation. "Usually, her clothes are very sweet, and there were definitely some edgier pieces," said Bowden. "I can't wait to try on some of the things I saw."

Victoria Beckham

Celebrity designer Victoria Beckham showcased her second collection on the 36th floor of the Waldorf-Astoria hotel, in a hushed, fragrant suite where models walked in and individually displayed Beckham's 23 looks. "I'm excited. It is more nerve-wracking than having a baby, to be honest," joked Beckham, who is vastly more charming and funny in person than her public persona might suggest. "We've worked really, really hard. It's been very intense."

Kristen Bell

"I just have to take a deep breath and remind myself that fashion isn't meant to be too serious," said Kristen Bell, dressed in a demure floral frock and gray cardigan at the Jill Stuart show. Bell relied on an extra set of eyes during the show, consulting with stylist Nicole Chavez about possible red-carpet looks.

Nicky Hilton, Paris Hilton and Kellie Pickler

Paris Hilton

lifted her Valentino sunglasses for a better look at Tracy Reese's Fall 2009 collection. Sister Nicky Hilton and fashion-week regular Kellie Pickler also admired the flirty floral dresses that came down the runway.

Rachel Zoe and Marc Jacobs

Star stylist Rachel Zoe put the squeeze on designer Marc Jacobs after his fashion show at the NY Armory. Jacobs showed an outrageous, Crayola-hued fall 2009 collection inspired by New York's East Village in the eighties.

NY FASHION WEEK VIDEO: Marc Jacobs

Jessica Stroup

It may be her first time at New York Fashion Week, but 90210's Jessica Stroup has already hit enough shows to be considered a pro. Here, the actress (outfitted in a black satin jacket, black-and-white tweed bustier and black pants by Carolina Herrera) waits patiently for the designer's Fall 2009 show to begin.

NY FASHION WEEK VIDEO: Carolina Herrera

Patricia Field and Solange Knowles

After providing a black-and-white striped outfit for the Barbie Runway Show, House of Field designer Patricia Field took a front row seat next to singer Solange Knowles at the Toni Maticevski show. Knowles also attended the Tracy Reese show where she had her eye on one piece in particular: "Gold lame suit. I want it!"