Her oldest kids, Maxwell and Ace, helped show off her new book.
See the famous mama's new sweet post.
The proud mother of three posted another photo of her smiling baby girl.
The businesswoman's trainer is sharing how she shed the weight!
ET is breaking down all the fitness tips and secrets that helped Jessica Simpson reach her fitness goals!
The fashion designer's third child looks a lot like her in the precious pic.
Simpson seemingly loved the shout-out.
Amy Schumer is channeling her inner Jessica Simpson!
The comedian didn't exactly come close to Simpson's 100-pound weight loss.
Simpson shared how, during her pregnancy with daughter Birdie, she reached a weight of 240, and was proud to have dropped 100 pounds.
The fashion designer showcased her new collection and talked about her diet and exercise regime on HSN.
The 39-year-old singer-turned-fashion designer showed off her bod in a curve-hugging LBD.
The singer-turned-fashion designer showed off her curves in a sexy LBD.
Simpson shared how her weight had previously reached 240 pounds and she was 'so proud' to be feeling 'like myself again.'