This beautiful belly dancer doesn't need a gym membership. Shakira's workouts take place on stage, with live audiences to cheer her on to dance harder (and burn more calories -- belly dancing can burn about 300 calories an hour). So it's no wonder this singer/song-writer has such toned legs, a lean middle, that tight butt, and of course, her signature, shapely hips.

Faith Hill, 41-year-old has a hott mama body, and the world knows it thanks to her flat-belly pose on the cover of the much-drooled-over December 2008 issue of "Shape" Magazine. Not a fan of low-carb diets, Hill's meals consist of Mediterranean cuisine and fresh organic produce. We hear that Pilates, gave the confidence to show off what she's got.

Kelly Ripa, the 38-year-old mother of three slid through her 20s without taking exercising seriously. All that has changed now is her arsenal of fitness moves includes running, squats, leg raises and arm-toning exercises.

What keeps her going?

Ripa has said vanity is a major motivator.

Jack Black looked dapper in a well-tailored tuxedo Wednesday night, as he attended a black-tie gala in honor of good pal Ben Stiller. But, he admitted, suiting up was a "humiliating" – and hysterical – ordeal.

"I only found out yesterday that this thing was black tie," the comedian told the audience at the American Museum of Moving Images Salute to Ben Stiller in New York.

"And I've got to say that I hate black tie. I was going to say screw it. I was just going to wear my jockies and trench coat."

What changed his mind?

"I found out that I was going to be sitting next to [Robert] DeNiro and P. Diddy. And they were going to be looking very sharp .... So I went over to Berdorf Goodman and I said, 'Show me your finest tux!' "

And that's when butterball Black ran into trouble.

"The lady there was like, 'Your neck ... it's too big. It's too big for this store! I'm sorry Jack Black, but you might want to go to Big and Tall."