By Jason Knapfel - DietsInReview.com

With millions of DVDs sold, and more classes opening coast to coast, Zumba, the Latin dance-inspired cardio class, is more popular than ever. It's a fun way to work your core, arms and legs, while burning hundreds of calories. For once it's a fitness trend that didn't gain its popularity by celebrity endorsement, but rather, found its way to them once the general public got into it.

Jennifer Lopez

This Latin singer and actress has dancing in her blood, making Zumba a logical fit for Jennifer's fitness regimen. She was quoted in an interview with Redbook magazine that "As women, we tend to give away a lot. We take care of a lot of people, and we can't forget to take care of ourselves. If that means once a week you're going to go off without the kids or without anybody...join a Zumba class...you've just got to do it."

Madonna

The ageless Material Girl has followed a number fitness and spiritual regimens. As an entertainer known for her dance moves, it's no surprise that Zumba classes are offered at Madonna's Hard Candy gyms (located in Mexico).