Watch now: Mary-Kate and Ashley Olsen are ravishing in Isaac Mizrahi!

The designer celebrated his latest line at the launch party for his new collection on QVC -- where celebs arrived in a Volkswagen TDI Touareg.

Watch the video for more.

The Levi's brand has partnered up with acclaimed street artist Shepard Fairey and OBEY Clothing to unveil a collection of co-designed, street-inspired styles for men.

Obey x Levi's promises to stitch its "renegade spirit" into denim silhouettes, distress details, and finishes inspired by Fairey’s personal collection of Levi’s jeanswear and collaboratively developed by Levi’s and Fairey.

“I’ve always felt that keeping my art bold, simple and refined was a way to cut through the clutter, and it’s a formula that Levi’s has been using for decades that keeps them accessible and populist yet stylish and relevant,” said Fairey.

'G.I. Joe: The Rise of the Cobra' actress and supermodel Karolina Kurkova has a handsome new addition to her family.

Kurkova, 25, gave birth to a 6 lbs. 3 oz. baby boy on Thursday in New York, People.com reports. This is the first child for the supermodel and film producer Archie Drury.

They named their new bundle of joy Tobin Jack Drury. Kurkova's rep tells People.com, "Both mother and baby are happy and healthy."

Donald Trump's daughter Ivanka customized her breathtaking wedding gown with the help of Vera Wang -- ET talks with the sought-after designer to hear the inspiration behind the bride's dream dress.

Wang says the design of Ivanka's dress was taken from Grace Kelly's gown that she wore when she wed Prince Rainier III in 1956. The designer describes her rendition of the historic dress as "majestic" and "demure."

"For Ivanka's wedding, she very definitely wanted to be covered," Wang tells ET of the bride's dress request. "It hearkened back to another time which is incredibly romantic."

ET's exclusively with model Marisa Miller for a look at the Victoria's Secret Harlequin Fantasy Bra.

Designed exclusively for Victoria's Secret by Damiani and valued at $3 million, the bra features a rare 16-carat heart-shaped, brown-yellow diamond pendant -- and surrounding the jewel are cognac-colored diamonds. The weight of the entire bra totals nearly 150 carats!

Watch Marisa strut her stuff in the bejeweled bra at the Victoria’s Secret Fashion Show, airing Tuesday, Dec. 1 on CBS and featuring musical guest the Black Eyed Peas.

These blondes are looking a little blue. Paris Hilton and "Melrose Place" actress Katie Cassidy sparkled separately in the same dress.

Cassidy was seen in the Brian Lichtenberg dress in August at The CW "Melrose Place" Premiere Party, while Hilton rocked the mini-dress at Tuesday's Fox Reality Channel's Really Awards.

To see more style savvy celebs, click HERE.

Reality star sisters and boutique store owners Kim, Khloe and Kourtney Kardashian are reportedly taking their sense of style and putting it into a fashion line.

Kim blogged on her Web site that the girls will be releasing a clothing collection through the brand Bebe, a clothing store commonly seen in shopping centers and malls. "Kourtney, Khloe and I are designing for Bebe! This is honestly a dream come true! We have always loved fashion and have wanted to design for such a long time and now we finally are," Kim blogged.

"I love Bebe and wear their clothes all the time so I can't wait for our collections to come out in the spring! You guys are going to love what we've come up with!"

The sultry and sexy 'Jennifer's Body' actress Megan Fox, 23, is stripping down to her underwear in the name of fashion.

The 'Transformers' star has signed on to be the new face and body of Emporio Armani Underwear and Armani Jeans campaigns, ET confirms. The actress was photographed this past July alongside Armani at the Giorgio Armani Privé show.

Fox's Armani ads will begin running worldwide in January. The actress succeeds Victoria Beckham, who stripped down for an Armani underwear campaign this past year.

You won’t believe what personalized undergarment Paris Hilton purchased, in honor of boyfriend Doug Reinhardt, while shopping in Las Vegas on Friday.

Hilton hosted a preview fashion show for her new sunglass collection poolside at Hard Rock Hotel & Casino. After showing off her shades, Hilton and Reinhardt enjoyed dinner at Nobu. And later, the couple was spotted partying at Body English.

Earlier in the day, the hotel heiress was seen shopping inside Love Jones, where she purchased items including Halloween costumes, a dress, jewelry and panties with Doug’s name on them.

ET was on the red carpet Thursday night in L.A. as Lauren Conrad and Kohl's department stores celebrated the launch of her new contemporary lifestyle brand for women -- and LC tells us whether or not she’s been watching "The Hills"!

“I didn’t watch, I’m sorry,” says the former "Hills" star. "I miss the crew, but I still get to see them and I’m still in touch with a lot of them."

We also got “The Hills” dish from Lo Bosworth at the event.

These plus-size models are baring it all to prove that not all models have to be super skinny to be super sexy.

In a photoshoot for Glamour magazine, some of the top full-figured models working today stripped down to reveal their real curves: Kate Dillon, Ashley Graham, Amy Lemons, Lizzie Miller, Crystal Renn, Jennie Runk and Anansa Sims.

“Gosh, it’s so nice that they’re feeding us,” says Lemons. “When I was doing runway, all I was ever offered was water and champagne, all day long.”

ET's own Mary Hart has decorated a custom pair of jeans -- for a good cause!

Mary is participating in Blue Jeans in Pink, a new fundraiser by retailer Coldwater Creek that will raise funds for Susan G. Komen for the Cure, the world's largest breast cancer advocacy organization.

Starting today and running through October 31, shoppers can enter to win Mary's jeans, as well as jeans decorated by Marg Helgenberger, Debra Messing, Susan Lucci, Andie MacDowell, Gabrielle Union and even Nancy G. Brinker, who founded Susan G. Komen for the Cure. There is no purchase necessary to enter, and no donation is required, but shoppers will also be able to donate money to Susan G. Komen for the Cure at any of the Coldwater Creek retail shops nationwide or at coldwatercreek.com. The retailer will match all donations made through this program up to $100,000, and has already donated more than $5.8 million to the breast cancer organization.