Best Transformation: Mariah Carey

The notorious yo-yo dieter slimmed down yet again while working on her recent album, E=MC2. In fact, Mariah, 39, flew her trainer, Patricia Gay, from St. Bart’s to NYC to help the 5-foot-9 pop star drop from a size 8 to a size 2 in roughly eight months. “I feel better than I’ve ever felt,” she says.

Best Abs: Mario Lopez

As the author of Mario Lopez’s Knockout Fitness, exercise aficionado Mario Lopez, 34, has every right to brag about his muscular torso. “I think I’m probably in the best shape of my life,” the weekend co-host of Extra tells Life & Style. “I always exercise. Every day. I always do something.”

Find out which celebs Life & Style deems body spectacular in the new issue of Life & Style, on newsstands now!