15/02/2011 12:38 GMT | Updated 22/05/2015 10:12 BST

The Biggest Hairdo In History? Billion-Dollar Woman Jessica Simpson Does The Cover Of New York Magazine

Big barnet: Jessica Simpson looks fab on the playful cover of New York magazine. Photo: New York magazine

How do you celebrate becoming the woman behind a billion-dollar fashion empire?

If you're Jessica Simpson, you get the world's biggest hairdo, and pose for the cover of super-cool New York magazine.

The singer-turned-fashion-designer's empire is set to make history this year by becoming the first ever celebrity fashion line to earn one billion dollars in annual sales.

The star's clothing line made $750 million last year, and is set to rocket even further.

In the playful and sexy photo shoot, Jessica admits her fashion line's soaring success has come as a surprise to her, saying: "I never thought I'd be some fashion mogul!"

So what's the secret of her success over other celebrity collections? "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," she explains.

The Texan launched her Jessica Simpson Collection in 2007 with a line of handbags, shoes and boots.

She then expanded it to include watches, clothing, cosmetics, luggage, bathing suits, and fragrances, which are all sold in major department stores across America.

Whatever her formula - it seems to be working!

What do you think of her New York magazine cover? We think she looks hot...