Best Celebrity Body Transformations of 2011

Look back at the stars who really worked their butts off.

Hot Bodies - At the end of each year weight-loss goals ring in at the top New Year’s Resolution and these stars are making us want to get it together ASAP! (Photos from left to right: Mike Coppola/Getty Images, Jason Merritt/Getty Images)

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Hot Bodies - At the end of each year weight-loss goals ring in at the top New Year’s Resolution and these stars are making us want to get it together ASAP! (Photos from left to right: Mike Coppola/Getty Images, Jason Merritt/Getty Images)

Jennifer Hudson: Poster Child for Success - Hudson has said, “I didn’t even know I was considered plus-sized until I came to Hollywood, I thought I was the perfect size!” But after she got pregnant with her now 2-year-old son, David, she said she decided to get healthier for herself. The singer and Oscar-winning actress joined Weight Watchers in 2010 and became one of this year’s biggest celebrity weight-loss stories when it was reported that she slimmed down from a size 16 to a size 6. Hudson maintains she didn’t use celebrity trainers or personal chefs, but instead relied on program’s portion-controlled meals and regular exercise regime combination, which helped her exceed her weight loss goal and shed 80 pounds. (Photos from left to right: Daniel Boczarski/Getty Images, Jemal Countess/Getty Images)

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Jennifer Hudson: Poster Child for Success - Hudson has said, “I didn’t even know I was considered plus-sized until I came to Hollywood, I thought I was the perfect size!” But after she got pregnant with her now 2-year-old son, David, she said she decided to get healthier for herself. The singer and Oscar-winning actress joined Weight Watchers in 2010 and became one of this year’s biggest celebrity weight-loss stories when it was reported that she slimmed down from a size 16 to a size 6. Hudson maintains she didn’t use celebrity trainers or personal chefs, but instead relied on program’s portion-controlled meals and regular exercise regime combination, which helped her exceed her weight loss goal and shed 80 pounds. (Photos from left to right: Daniel Boczarski/Getty Images, Jemal Countess/Getty Images)

Jordin Sparks: One Step at a Time - This singer had tongues wagging when she unveiled a new, hot bikini bod on Twitter, which she said was a result of making being active a priority instead of just talking about it. “It was one of those things where I was turning 21 and New Year's was coming and it was like I'm not going to start my resolution on New Year’s day, I'm going to try to start it early and just stick to it.” Sparks got the ball rolling with small changes: “I started slowly by walking the path around my house, and then eventually walking a little bit faster, and then actually going and climbing up the mountain [near my home],” she said. From there, she beefed up her workouts by working with a personal trainer, took Zumba classes with her mom and made small changes in her diet, which resulted in a reported 30 pound lost. (Photos from left to right: Jason Merritt/Getty I...

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Jordin Sparks: One Step at a Time - This singer had tongues wagging when she unveiled a new, hot bikini bod on Twitter, which she said was a result of making being active a priority instead of just talking about it. “It was one of those things where I was turning 21 and New Year's was coming and it was like I'm not going to start my resolution on New Year’s day, I'm going to try to start it early and just stick to it.” Sparks got the ball rolling with small changes: “I started slowly by walking the path around my house, and then eventually walking a little bit faster, and then actually going and climbing up the mountain [near my home],” she said. From there, she beefed up her workouts by working with a personal trainer, took Zumba classes with her mom and made small changes in her diet, which resulted in a reported 30 pound lost. (Photos from left to right: Jason Merritt/Getty I...

Mariah Carey: Bye Bye Baby Fat - Mimi found herself packing away her usual minis and mid-drift tops when she got pregnant with twins Moroccan and Monroe, and lamented she “gained an enormous amount of weight” during her pregnancy. But she didn’t stay there for long! Three months after she gave birth, she was showing off flat abs and toned legs on the cover of Us Weekly magazine and declaring “I got my body back!” After initially losing 40 pounds of water weight from her difficult pregnancy, the singer says she got it tight by shedding an additional 30 pounds with the help of Jenny (formerly Jenny Craig). Carey followed a Jenny-certified program of consuming no more than 1,500 calories a day and working out three times a week and currently flaunts her post-baby figure as a spokeswoman for the brand. (Photos from Left to right: Johnathan Mazur/Getty, Stuart Wilson/Getty Images)

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Mariah Carey: Bye Bye Baby Fat - Mimi found herself packing away her usual minis and mid-drift tops when she got pregnant with twins Moroccan and Monroe, and lamented she “gained an enormous amount of weight” during her pregnancy. But she didn’t stay there for long! Three months after she gave birth, she was showing off flat abs and toned legs on the cover of Us Weekly magazine and declaring “I got my body back!” After initially losing 40 pounds of water weight from her difficult pregnancy, the singer says she got it tight by shedding an additional 30 pounds with the help of Jenny (formerly Jenny Craig). Carey followed a Jenny-certified program of consuming no more than 1,500 calories a day and working out three times a week and currently flaunts her post-baby figure as a spokeswoman for the brand. (Photos from Left to right: Johnathan Mazur/Getty, Stuart Wilson/Getty Images)

Raven Symone: The Stress-Free Diet - For years, Symone proudly rocked a curvaceous silhouette, but the actress made headlines when she reportedly lost 35 pounds and popped up on red carpets showing off a svelte figure this year. Raven told Wendy Williams that stress caused her weight gain during her run on the popular Disney show That’s So Raven, and that the weight loss happened naturally after the show ended. "[It wasn't] just overeating because I’ve actually been eating the same. I keep a little bit more smaller portions because I learned that your body has to get rid of that stress some way,” she said. “Some people break out, some people lose their hair, some lose weight, some people gain weight, my body just reacted a certain kind of way." But all the attention she’s gotten for her new slender figure doesn’t seem to faze this confident cutie who added, “I find it f...

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Raven Symone: The Stress-Free Diet - For years, Symone proudly rocked a curvaceous silhouette, but the actress made headlines when she reportedly lost 35 pounds and popped up on red carpets showing off a svelte figure this year. Raven told Wendy Williams that stress caused her weight gain during her run on the popular Disney show That’s So Raven, and that the weight loss happened naturally after the show ended. "[It wasn't] just overeating because I’ve actually been eating the same. I keep a little bit more smaller portions because I learned that your body has to get rid of that stress some way,” she said. “Some people break out, some people lose their hair, some lose weight, some people gain weight, my body just reacted a certain kind of way." But all the attention she’s gotten for her new slender figure doesn’t seem to faze this confident cutie who added, “I find it f...

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Fat Joe: A Personal Catalyst for Change - After being diagnosed with diabetes and witnessing the deaths of overweight friends, Fat Joe decided it was time to change the habits that helped him earn his infamous stage name. "I realized at a certain point, all my big people were dying," he told CNN. "Last year alone, I had six friends die of heart attacks. Most of them were younger than me, but they were my same size.” The rapper now uses a personal trainer, exercises regularly and eats smaller meals throughout the day, all of which helped him shed an astounding 100 pounds. The healthy habits have also helped him reverse the diabetes. (Photos from left to right: Jeff Daly/Picturegroup, Manny Hernandez/PictureGroup)

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Fat Joe: A Personal Catalyst for Change - After being diagnosed with diabetes and witnessing the deaths of overweight friends, Fat Joe decided it was time to change the habits that helped him earn his infamous stage name. "I realized at a certain point, all my big people were dying," he told CNN. "Last year alone, I had six friends die of heart attacks. Most of them were younger than me, but they were my same size.” The rapper now uses a personal trainer, exercises regularly and eats smaller meals throughout the day, all of which helped him shed an astounding 100 pounds. The healthy habits have also helped him reverse the diabetes. (Photos from left to right: Jeff Daly/Picturegroup, Manny Hernandez/PictureGroup)

Melanie Brown: Curbing the Pregnancy Cravings - After giving birth to her third daughter, Madison, in September 2011, Mel B declared she wanted to lose around 33 pounds by New Year's. The singer said she had been exercising, but needed a push to find a healthier diet after “pigging out” during her pregnancy. “I love my humps and bumps, but when a newspaper described my shape as the 'bootylicious, curvylicious, post-baby body of Melanie,' I knew I had to do something. I had to get the eating under control,” she said. Brown found motivation as spokeswoman for Jenny Craig’s Australia and New Zealand branches. “I’m saying to myself I’m going to lose the weight bit by bit. I don’t want to do a crazy diet,” she said. (Photos from left to right: Lucas Dawson/Getty Images, Frederick M. Brown/Getty Images)

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Melanie Brown: Curbing the Pregnancy Cravings - After giving birth to her third daughter, Madison, in September 2011, Mel B declared she wanted to lose around 33 pounds by New Year's. The singer said she had been exercising, but needed a push to find a healthier diet after “pigging out” during her pregnancy. “I love my humps and bumps, but when a newspaper described my shape as the 'bootylicious, curvylicious, post-baby body of Melanie,' I knew I had to do something. I had to get the eating under control,” she said. Brown found motivation as spokeswoman for Jenny Craig’s Australia and New Zealand branches. “I’m saying to myself I’m going to lose the weight bit by bit. I don’t want to do a crazy diet,” she said. (Photos from left to right: Lucas Dawson/Getty Images, Frederick M. Brown/Getty Images)