Jessica Simpson and Jennifer Hudson Discuss Slimmer Bodies in Weight Watchers Commercial

Jennifer Hudson is passing the torch to Jessica Simpson.

The slimmed-down singers have joined forces for a new Weight Watchers 360 commercial, which will air beginning Jan. 3.

"I was overweight my whole life," Hudson, 31, admitted in the ad. "I figured I was just born that way." (The Dreamgirls star has lost more than 80 pounds since teaming up with company in 2010.)

Wearing a figure-flattering black ensemble, Simpson added, "I obsessed about my weight my whole life. . . I was always on some new life-stopping diet." Participating in the Weight Watchers program, the pregnant star explained, "lets me be me."

jennifer hudson and jessica simpson
Jessica Simpson and Jennifer Hudson meet on the set of their first joint Weight Watchers ad. Weight Watchers

For the next few months, Hudson will be the brand's main spokeswoman. Simpson, 32, "will not be following the program" during her second pregnancy, Weight Watchers recently announced. The "I Wanna Love You Forever" singer — who was hired for $4 million — is expected to resume Weight Watchers after the birth of her second child.

Us Weekly broke the news of the Fashion Star mentor's baby news in November. Simpson and her fiance, Eric Johnson, welcomed daughter Maxwell Drew in May.

Sign up now for the Us Weekly newsletter to get breaking celebrity news, hot pics and more delivered straight to your inbox!

Want stories like these delivered straight to your phone? Download the Us Weekly iPhone app now!