A lot can happen in 21 days. Just ask trainer-to-the-stars Jeanette Jenkins, who swears that within three weeks you can alter your life, lose weight and get on the fast track to a healthier, happier you. With eight workout videos under her belt and her My Workout seen on Lifetime television, Jeanette's new book is an evolution of the program that's worked to transform tens of thousands of people.

Unlike many programs, The Hollywood Trainer Weight-Loss Plan is a holistic approach that focuses not just on the diet and fitness aspects of getting in tip-top shape, but the spiritual components that are also necessary to get yourself in a better place, both physically and mentally.

Designed with the busy woman in mind, Jeanette maintains you don't have to be a star to look like one. Whether you're a frantic professional who's always on the go or a stay-at-home-mom who's short on time and low on energy, The Hollywood Trainer Weight-Loss Plan can transform your life and give you a much-needed lift.

"My clients definitely experience more energy through the day," Jeanette says. "Kimora has two children, and she runs the Baby Phat clothing line. When she works out, she says she feels it. She has more energy, and when it's time for her to do a photo shoot, an ad campaign or a major promotion, she makes sure she stays consistent with eating healthy and training to look the best she can.

"When Queen Latifah has a major event, she also lets me know she's sticking to the plan. The good thing about the book and the DVD is to make sure they can stick to things when I'm not traveling right there with them. They're used to having me right on set or around the corner. Now they have the book when I'm not around."