By Breaking Celebrity News Staff

No pain, no gain!

Jennifer Lopez may have one of the hottest bodies on the stage, but it doesn’t come effortlessly for the 42-year-old.

New details about the hot mama’s workout and diet regiment have been revealed, and prove that the ex-American Idol judge has to work HARD to look that good.

"She gets up at 4 a.m., six days a week and does 90 minutes of Pilates and dance cardio," a source close to the star dished to UK’s Heat magazine about her early morning exercising. "She works out like crazy."

Lopez, who has worked out with Gunnar Peterson for several years and more recently became a fan of The Tracy Anderson Method, also has been known to follow the high-protein Dukan Diet, which was made famous by Kate Middleton.

"She has an assistant who brings her snacks at exact times," the source explains about how Jennifer sticks to her diet plan.

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