Life really couldn’t get any better for Jessica Simpson - she’s engaged, she has a new album, she performed at the Macy’s Thanksgiving Day Parade and her fashion line has become one of the most successful celebrity fashion lines of all time - potentially the first ever to earn more than a billion dollars in retail sales!

The pretty 29-year-old graces the cover of Women’s Wear Daily on Monday with the headline, “Jessica Simpson: Fashion’s Billion Dollar Baby,” and the article notes that her line has brought in $750 million in retail sales alone this year.  That’s $750,000,000.  Wow!

PHOTOS: Jessica Simpson And Other Engaged Stars Show Off Their Bling And Their Bikinis

It is estimated that the Jessica Simpson Sportswear and Jeanswear lines will generate between $150 million and $200 million in retail sales within the next two years.