'American Idol' Star Mandisa's Amazing Weight Loss

The three-time Grammy nominee is motivating others to live a healthier life.
3:00 | 08/27/12

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Transcript for 'American Idol' Star Mandisa's Amazing Weight Loss
Well, more good news now. Mandisa. You may remember her at the "american idol" sensation that rocked was the hechly voice. She became a three-time gammy nominee and she is ready to share another secret. First, her story. ♪ In love ♪ Reporter: When 35-year-old mandisa hundley auditions in 2006, what was supposed to be her big break turned into heart break. Judge simle cowell said this. Do we have a bigger stage this year. It was just hurtful and mean. The one thing I didn't want to have happen. Reporter: It was a life-changing moment. ♪ Everybody's looking ♪ Reporter:ER MANDISA FOUND A Love for zumba, began to oath healt healthy, and found a personal trainer. Her goal, to lose 100 pounds. This tweet from one of her low points. I'm fed up and over it. She says her fans and religion kept her on track. By the time her hit single, "stronger" was released, she lost weight and found her strength. Here she is, mandisa, hoping her story motivates others and gives them the courage and wherewithal to lose weight. You say the new album was inspired by this journey. There was a time I didn't feel like getting up and going to zumba, I did everything right, I got on the scale, i gained 1.8 pounds. I took a nap. When I got up, I had hundreds of messages. Your journey to 100. You're thesharing it with your viewers. What would you say now the simon cowell, many viewers were outraged. What would you say today? The same thing I said in my season. I forgave him for what he said to me. I've been forgiven for so much. I could extend the same grace. Then I would follow it up with, how do you like me now? We'll hear more from you

This transcript has been automatically generated and may not be 100% accurate.

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