Working out and dieting will never get out of style with more and more people opting to live a healthier lifestyle nowadays.

However, some people lose their interest in the cause without proper motivation. Each person has a different purpose for dieting but there are quite a lot of people who start working out because of their favorite stars.

Staying in shape sometimes become stressful and frustrating but the perks and rewards of a healthier body are tremendous! It gives a person more confidence and bouncier steps-literally. These celebrity weight loss photos prove that!

Some of the biggest transformations include Jennifer Hudson's incredible 80-pound lighter figure, Chris Pratt's new abs, as well as Christina Aguilera's estimated 20-pound yoga-assisted weight loss.

Just like Jennifer Hudson, another 'American Idol' alum also lost a lot of weight. Jordin Sparks reportedly lost 50 pounds after turning 21!

Browse through the gallery to see some star's seriously trimmed new bodies with these celebrity weight loss photos.