Jessica Simpson has reportedly ditched plans to add a menswear collection to her booming fashion empire.

The singer-turned-fashion mogul founded her self-titled brand in 2006, with products including women's clothing, handbags, shoes, fragrances and accessories and she has since turned it into a $1 billion business.

Editors at America's Star magazine claim Simpson, who is pregnant with her second child, had been in talks to create a line of apparel for men, with her fiance, former American footballer Eric Johnson, in charge of the designs.

But Simpson was not won over by the T-shirt, jeans and khakis range her creative team came up with and she allegedly chose to scrap the idea altogether.

A source tells the publication, "The idea of a men's line was nixed as soon as the presentation meeting finished."