The Jennifer Hudson weight loss story is a pretty simple one. The singer lost 80 pounds while on the weight watchers program and has kept it off ever since. She's still getting used to her new body, but is at the weight she wants to be. People think that she keeps losing more and more weight, but she's just "maintained" the 80 pounds off. If you look at Jennifer Hudson before and after losing her weight you'll see a huge difference. She went from a "big girl" to a totally slender girl.