Jessica Simpson, Jennifer Hudson collaborate for WeightWatchers ad

London: Pregnant Jessica Simpson has teamed up with fellow diet diva Jennifer Hudson to discuss their slimming success in a new advertisement for WeightWatchers.

In the commercial, which makes its debut today, the brand`s spokeswomen strut down a street and recall past struggles to shift unwanted pounds, reported Daily Express.

Hudson said, "I was overweight my whole life. I just figured I was born that way." While Simpson added, "I obsessed about my weight my whole life. I was always on some new life-stopping diet."

Simpson, 32, who recently confirmed that she is pregnant with her second child, then praises the WeightWatchers plan, insisting, "It lets me be me. I amazed myself."

Company bosses have confirmed Simpson will not follow the diet during her second pregnancy, but she will resume the programme after giving birth.

The `I Wanna Love You Forever` hitmaker has lost more than 50 pounds (23 kgs) on Weight Watchers, while Hudson shed 80 pounds (36 kgs).