Jessie may not hold a degree from Harvard and may find herself in more than her fair share of “blond” moments, but the pop singer is about to have something in common with the social networking kingpin, Facebook creator Mark Zuckerberg – she’s joining the ranks of young billionaires. Her ubiquitous fashion line, which includes shoes, purses, hair extensions, clothes and more, is gearing up to make $1 billion in sales this year (up from $750 million in sales last year), according to New York magazine, which features the bombshell on the cover of its latest issue.

“I never thought I’d be some fashion mogul!” she quipped. Jessica’s secret sauce to success:  she says she doesn’t try to concentrate on having a “trendy” collection, rather she puts the main focus on “basics” that appeal to the widest range of woman of all ages, tastes, and body types. She explains: “We try not to set trends, but you need your trending pieces in every delivery. But those go fast. What you really need is your basics for every type of person.” She goes on to say that other celebrity brands out there are doing 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.”

Like her customers, Jessica likes to look stylish. She’s tried a bevy of trends herself over the years, including those famous high-waisted jeans on stage in 2009 that made international headlines. Ironically, the look is a top trend straight from this season’s runways. “I still thought I looked cute,” she said of the infamous outfit. “I wouldn’t have gone onstage if I didn’t.” OK, let’s not push it. She does, however, look super-cute in a bold red, figure-flattering, knee-skimming dress, nude sandals, and Marc Jacobs aviators, which add a touch of sporty glam to an otherwise ultra-fem ensemble.  Choose from three frame hues including a gorgeous Palladium blue with blue gradient lenses.  –rpuccia

Buy these now: Marc Jacobs 107/S, $201