“This is better than ‘Sex and the City,’” said Karen Greenstein as she placed a black headband with a netted bow twice the size of her head atop her tightly pulled back blonde hair.

The headband is just one of many Cynthia Rowley accessories for sale alongside Rowley’s entire fall collection inside a revamped courier truck just a few feet wide. It is a boutique on wheels, and according to Greenstein, a beauty expert, it is even more fashion-forward than the outfits that the ladies of the ever-popular television series “Sex and the City” have been sporting for years.

Karla Cavalli, a stylist, fashion expert and personal shopper, said that she has never seen anything like it.

“This is the first, which is why I think it’s so interesting and groundbreaking,” Cavalli said. “She’s actually taken something that caught on with the food industry and moved it to high-end fashion.”

If the fashion truck is anything like the food trucks, designer Cynthia Rowley, who is based in New York, will be setting trends not only on the runways, but on the streets as well. Rowley’s style mobile has been on the road for the last year, traveling from New York through Miami, Atlanta, cities in Texas, Arizona and now California, where Paige Segal acts as truck manager.

“She liked the idea of bringing the fashion to you personally,” Segal said. “I think people are wowed by the concept first and are excited because it almost seems like it would be impossible.”

Though the truck is small, it houses Rowley’s entire fall 2010 collection, some of her spring and summer items, as well as shoes and accessories galore on a couple of shelves opposite a rack of clothing the length of the vehicle.

“She’s got sunglasses, bags, jewelry — it’s kind of like endless dress-up in there,” Cavalli said.

The truck even has a place for shoppers to try on the clothes: a small dressing room in the back corner complete with a full-length mirror, separated from the rest of the shop by a curtain.

“Shopping there is really easy,” said Lauren Custer, a downtown Los Angeles resident who bought a tank top and bracelet from the truck. “You just come in, you see the clothes, you can look through them, and it’s everything you need.”

Custer visited the truck a few weeks ago when it was stationed behind Project Angel Food on Vine Street in Hollywood. A non-profit organization that prepares and delivers free meals to people affected by HIV, AIDS, cancer and other life-threatening illnesses, Project Angel Food is just one of many charities that the Cynthia Rowley truck has collaborated with to raise funds.

“We love to do fashion events, so when Cynthia Rowley said to me, ‘We have a fashion truck,’ we just thought it was such a cool idea,” said Diana Bianchini, owner of Di Moda Public Relations, the firm that represents Project Angel Food.

Bianchini also pointed out that the truck allows Cynthia Rowley’s designs to be exposed to an entirely new demographic since the designer’s boutiques are primarily located on the East Coast.

“Maybe people in New York know all about Cynthia Rowley and people on the West Coast know about Cynthia Rowley, but people in Arizona might not be as in tune to what’s going on with her collection, so the truck goes piling through Texas and Arizona, and everybody down there gets to see it,” Cavalli said.

Though people say that Rowley’s truck — its exterior painted with large turquoise and light blue roses — is the first of its kind that they’ve seen in Los Angeles, the concept appears to have caught on in other places already. According to the L.A. Times, Alice + Olivia, a contemporary women’s fashion label, turned an Airstream mobile home into a combination boutique and makeover wagon this summer, taking it all over the southern United States.

In a world that is largely controlled by the ability to get information to the masses quickly, Cavalli pointed out, the fashion trucks fit in perfectly.

“You’ve got Twitter, you’ve got Facebook, and it’s all about how many people can be your friends, how many people can know about you or your product or your brand,” Cavalli said.

For this reason, Cavalli said she thinks many other stores will follow suit and create mobile boutiques of their own.

“I think it’s probably the next phase in fashion,” said Jacqui Farina, who is on Project Angel Food’s board of directors and serves as co-chair of Divine Design, the organization’s annual fashion fundraising event. “It’d be great to have a shoe truck, a handbag truck, a jewelry truck — cover the whole spectrum of fashion. And I think we’re going to see it.”

After about a month and a half spent cruising the Los Angeles area, parking at places like Fashion Island in Newport Beach and participating in Fashion Night Out, the Downtown Art Walk and a number of private events, the Cynthia Rowley truck is now continuing its travels up the coast, eventually putting on the brakes in San Francisco. Segal said that after watching its success in Los Angeles, she wishes she could follow the truck to San Francisco.

“It actually surprises me how much it does sell,” Segal said. “I guess it’s just so exciting when you go in there that you want to buy something because you’re also buying part of the experience. You’re buying the story that goes along with it—  you can say, ‘I got it from this boutique on wheels.’”

Reach contributor Juliana Appenrodt here.