Jessica Simpson's deal with Weight Watchers is reportedly on shaky ground.

Related: Simpson wants to marry before birth

The 'Fashion Star' mentor - who shed 70 pounds on the weight loss program after the birth of her first child Maxwell seven months ago with her fiance Eric Johnson - has reportedly angered executives for already getting pregnant again after they gave her $4 million to be the face of the company.

A source told US Weekly magazine: "They're furious at Jessica. She was already on thin ice with them since she didn't lose enough for the first ad, when they had to shoot from the waist up."

Related: Jessica Simpson: Working hard to lose weight

According to the insider, the company don't think they can continue to run campaigns featuring Jessica because she is pregnant.

The source said: "They don't think it can run. No one wants to hear about a pregnant woman dieting."

Jessica is yet to officially confirm she is pregnant but is said to be thrilled to be expecting her second child so soon after the arrival of her daughter in May.

The source said: "It definitely wasn't planned. But yes, Jessica is pregnant again."

Jessica has previously said of her daughter: "Motherhood is a dream, it really is absolutely amazing."

Related: Jessica Simpson to have amazing wedding

The former singer has been engaged to NFL player Eric, 33, for two years, and it was rumoured they had been planning to tie the knot in Italy next year.

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