She has lost more than 27kg in just five months, but it certainly hasn’t been easy for new mum Jessica Simpson.
Website TMZ has obtained a copy of her diet plan and it shows just how hard the singer — who has a $3 million Weight Watchers contract — worked to lose her baby weight.
Her strict four-month eating regime, designed by Jessica's former private chef, included low-fat smoothies, protein and lots of vegies.
It closely follows the Weight Watchers point system, with some fancier options on the homemade menu, including egg-white omelettes, chicken satays, whipped chick peas, soba noodles and shrimp skewers.
Jessica’s weight-loss plan started with a 15-day smoothie diet back in July, which consisted of five days of three smoothies a day with two healthy snacks, five days of two smoothies a day (plus one meal and two snacks) and five days of one smoothie a day (two meals and two snacks).
She also put in a lot of hard work with celebrity trainer Harley Pasternak to get her body back in shape.
Jessica reportedly gained more than 31kg during her pregnancy, and tipped the scales at over 90kg.
Despite her recent weight-loss success, Jessica admits her past weight struggles have caused her a lot of hurt.
“I definitely don’t pick up the magazines," she said.
"I definitely don't google my name. I try to avoid it completely, but I subconsciously know the talk is going on. Every day it's a struggle for me.
"I have to separate myself from the world's expectations. I have to look inside myself. I'm not a supermodel ... I just wanna be a better version of myself."
Related video: Jessica Simpson talks about her weight loss.