Jessica Simpson's lucrative fashion empire grows

Jessica Simpson's engagement to athlete Eric Johnson isn't the only relationship in her life that's been secured with diamonds recently.

On Tuesday, jewelry retail company Zale Corporation announced that it is partnering with Simpson to create a diamond collection line. The announcement highlights the recent successes of the singer-turned-designer.

After dealing with numerous personal situations - relationship woes, weight gain and record sales flops to name a few - Simpson diligently built her brand to ensure a profitable comeback. Today, the star's personal fashion line, the Jessica Simpson Collection, is reportedly worth $1 billion alone. The line includes everything from dresses and coats to handbags and shoes.

Since its debut, Simpson's collection has garnered a tremendous following and furthermore gained a sense of fashion credibility from editors, buyers and consumers, worldwide.

AP Photo

"I have always wanted to design fine jewelry," said Simpson. Her collection will include rings, earrings, bracelets and more, set at "affordable price points," as noted in the press statement. The specific conditions of the deal have not been released, yet.

The line will arrive in U.S., Canada and Puerto Rico Zales locations in October.