What you really need is your basics for every type of person

Nobody is more surprised by Jessica Simpson's success as a fashion maven than the designer herself! Taking over New York magazine's spring fashion issue, the 30-year-old beauty appears on the cover showing off a huge, teased 'do and dishes about her rise to success.

"I never thought I’d be some fashion mogul!" Simpson told the mag.

But, whether or not she planned for it, Simpson's new ready-to-wear and career separates lines will bring her company's sales past the billion-dollar mark -- a figure comparable to those of famed designers like Michael Kors.

So, what's the secret to Simpson's accidental success? It seems she can relate to the average shopper and knows what she's looking for when she hits the stores.

"What you really need is your basics for every type of person," Simpson says. "When it comes to other celebrity brands, I think a lot of people do a great job, but it can't be all about them.

Everybody doesn't want to just look like the celebrity, because they can't. They just want one element of that style."

Her business manager, David Levin, agrees. "A girl could go to the shopping mall with her mother and she'd have a great new outfit and still have some money left for lunch at McDonald's," he said. "She can look like Jessica Simpson, smell like Jessica Simpson, and she can afford it."