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Jessica Simpson's hot swimsuit body: Her 70-pound low carb weight loss

Jessica Simpson swimsuit body: 70-pound weight loss on low carb sugar-free diet
Jessica Simpson Instagram

Jessica Simpson showcased her hot swimsuit body and 70-pound weight loss in a sizzling new photo posted on Instagram Aug. 11.

In the caption, Simpson noted how proud she was of all the hard work she put into her low-carb, sugar-free diet and workout routine. "We are proud to be in our bathing suits!! @baylormcg #hardworkpaysoff #workoutpartnersforlife," Jessica wrote.

In the snapshot, Simpson beams as she puts her her toned legs on display in a form-fitting black one-piece swimsuit (see photo, far right). Jessica's road back to her pre-baby body has been tough but worth the effort.

Low Carb, Sugar-Free Diet Yoga and Walking

Simpson, a rep for Weight Watchers, has credited a low carb, low-sugar diet and rigorous daily workouts for her dramatic 70-pound weight loss. Jessica's diet typically features a mix of high-quality proteins like salmon and chicken and fresh vegetables and salads. Simpson makes a concerted effort to avoid processed foods and sugar.

In 2005, Simpson slimmed down to 115 pounds for the film, "The Dukes of Hazzard," by following the low-carb Atkins diet, but has since incorporated more carbs into her meal plan to avoid carb binges.

For exercise, the mom of two walks four to five miles every day (or 8,000 to 10,000 steps) and does yoga. Simpson also works out at the gym for 45 minutes, four days a week, with her longtime trainer Harley Pasternak.

Jessica confessed her pregnancy weight gain made her depressed and demoralized. "I was so insecure; I couldn't even believe what I weighed," she said. "I don't think I ever expected to see the numbers that I've seen on the scale."

Simpson's longtime trainer, Harley Pasternak, said the foundation of Jessica's workout routine is daily walking. Pasternak, author of The Body Reset Diet, also trains Halle Berry, Lady Gaga, and Kim Kardashian.

'I've Been Every Size On the Planet'

Ironically, Jessica said her weight struggles are part of the reason she's so successful with her clothing line, which boasts annual sales of $1 billion. Simpson said women relate to her because she's not naturally skinny and has weight issues, just like many of them do.

“I have been every size on the planet and I understand women,” she told Forbes. “I definitely go up and down with my weight, and I'm really honest about it. If I'm 5 pounds heavier, if I'm 50 pounds heavier, or 5 pounds lighter, I just don’t think it should define who you are."

Simpson is glad she never caved in to the extreme pressure to resort to starvation diets or other unhealthy measures. "I was proud of myself throughout that period for not doing every crash diet and trying to get as skinny as I could, or not eating," she said.

Jessica, who's married to former NFL star Eric Johnson, has been hurt by the cruel media fat-shaming over the years, but said it taught her valuable lessons about body image and self-esteem. "Tune into yourself and tune out the world," she said. "I think it's always good to go inward. There is some sort of god in all of us that can make us powerful."