CaptionSince giving birth to daughter Maxwell Drew Johnson, Jessica Simpson has been seen hitting the gym, but the star wants her fans to know it’s not because of her new gig.

“Just so everyone knows…Weight Watchers hasn’t put ANY pressure on me!” the 31-year-old new mom Tweeted.

“I’m trying to be as healthy as I can be for myself and I feel great!” the star and Weight Watchers spokesperson, who welcomed her first child with fiance Eric Johnson, continued.

Earlier this month Jessica opened up to People magazine about her post-baby weight loss plan.

“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 said.

“For me, I really want to do something that is a lifestyle, because in the past, I’ve been known to yo-yo diet.”

Adding, “There’s not a goal weight – I just want to feel normal and fixate on inches. I really want to set small goals, so I’m constantly reaching goals and not looking at something so far ahead.”