Jessica Simpson, Weight Watchers Body In Commercial Debuts Christmas Along With Baby Bump [Photo]

After months of training after giving birth to her daughter Maxwell Drew, Jessica Simpson is ready to show off her new sexy body before gaining the baby weight back for her next child.

As the Weight Watchers spokeswoman, the singer lost 50-pounds for her new "Expect Amazing" campaign which will air on Christmas Day. The background of her new commercial isn't like her Weight Watchers buddy, Jennifer Hudson. Simpson's scenery is in the California desert like a true country singer. The singer said she felt self-conscious after giving birth and lost her weight by training hard and going along with the weight watchers guidelines, "I think anybody who's gone through a pregnancy, after they have the baby, it's like, 'I need to do something about this!' " she told PEOPLE in May. "For me, I really want to do something that is a lifestyle, because in the past I've been known to yo-yo diet." 

Although the singer hasn't been singing any tunes lately, she has been expanding her fashion in her multi-million dollar shoe line, and with new fashion sense comes personal changes in her life, "Weight Watchers changed my relationship with food, and I feel so much more prepared to make the right choices," she says. "It feels pretty incredible."

No one is sure how long her new figure will last since a friend close to Simpson confirmed that the mogul is pregnant again. According to Celebuzz's source, the news came along at her father's Christmas party, "As Jessica and her [fiance] were about to leave the party somebody asked her, 'How's the baby?' and she boasted, 'Which one?! I'm pregnant again!'" the insider said. "She was so happy, smiling and giggling."