Jessica Simpson is allegedly eager to lose more weight.

The Weight Watchers spokesperson who lost 50 pounds before marrying Eric Johnson in Montecito, California earlier this month, is determined to stick to her strict diet and exercise regime.

A source close to the 33-year-old beauty, who has a son, Ace, 13 months, and daughter Maxwell, two, with her husband, told Touch Weekly magazine: "She's been the smallest she's been in years, and she still doesn't think it's good enough. She is determined to get even thinner."

Jessica, who has been a Weight Watchers spokesperson since 2012, has allegedly gone to extremes to ensure she never gets called overweight again.

A second insider claimed: "Jessica wants to get down to 93 pounds. She's become an exercise addict."

She walks six miles a day, strength-trains three times a week and constantly runs on a treadmill. She's gotten so carried away, she's fainted on a few occasions."

The blonde beauty recently admitted she doesn't want any more children despite having a "beautiful life" with her family.

Post marital bliss hasn't affected her diet, according to another source who claimed Jessica has 'cut carbs, sugar, soy, red meat and processed food.'

"She still likes to drink, so if she has a cocktail, she won't eat! She never wants to be made of her weight ever again," the source explained.

The actress also opened up about her new husband and gushed: "I've waited a long time to find someone as wonderful as he is, and I look forward to raising our children together and growing together. With Eric, it's only just begun."

Last week, Jessica Simpson was named the sexiest mother out there, right now, in the world, by Victoria's Secret.

The actress posted a lean picture of her on Instagram.