20 Celebrity Body Transformations

20 Celebrity Body Transformations

20 Celebrity Body Transformations

Celebrities are constantly changing their appearance. Whether it's by means of weight loss, weight gain or a simple change of wardrobe, stars in the spotlight love to shock others by doing something different.

20. Bristol Palin

20. Bristol Palin

Bristol Palin wowed the crowd with her new physique during her appearance on 'Dancing with the Stars: All-Stars'. She contributed her weight loss to her active lifestyle and a healthier diet.

19. Jessica Simpson

19. Jessica Simpson

After the birth of her daughter in 2012, Simpson dropped 60 pounds thanks to Weight Watchers.

18. Carrie Underwood

18. Carrie Underwood

The country pop star went down a few sizes after winning her season of 'American Idol'.

17. Marissa Jaret Winokur

17. Marissa Jaret Winokur

The Tony-winning actress lost 60 pounds. She went from a size 14 to a size 2.

16. Taylor Lautner

16. Taylor Lautner

The 'Twlight' star went from skinny to buff in what seemed like a short period of time.

15. Jennifer Hudson

15. Jennifer Hudson

In the last four years, Jennifer Hudson has lost 80 pounds with the help of Weight Watchers.

14. Jack Osbourne

14. Jack Osbourne

Jack Osbourne began losing weight shortly after being diagnosed with MS in June 2012.

13. Kelly Osbourne

13. Kelly Osbourne

Kelly Osbourne lost 70 pounds in 2013. She began doing more cardio and started eating healthier.

12. Christina Aguilera

12. Christina Aguilera

'The Voice' star used to embrace her fuller figure, but lately she's been showing off a more toned body.

11. Chris Pratt

11. Chris Pratt

Chris Pratt cut out all alcoholic beverages in order to achieve his new chiseled look.

10. Dr. Dre

10. Dr. Dre

Dr. Dre shocked the world when he made a special appearance at the VMAs. He got buff -- very buff.

9. 50 Cent

9. 50 Cent

The rapper dropped down to 160 pounds in nine weeks with the help of a juice-based diet.

8. Craig David

8. Craig David

Craig David used to hit the music charts, but now it seems he's more focused on hitting the gym. Good for him.

7. Kirstie Alley

7. Kirstie Alley

Kirstie Alley lost more than 100 pounds during her stint on 'Dancing with the Stars'.

6. Nicole Richie

6. Nicole Richie

The former 'The Simple Life' co-star dealt with weight issues for awhile. She finally started to focus on her health when she became a mom to daughter Harlow Winter Kate Madden and son Sparrow James Midnight Madden.

5. Snooki

5. Snooki

From hot mess to hot mama, the former 'Jersey Shore' star lost more than 40 pounds in six months after giving birth to her son, Lorenzo.

4. Perez Hilton

4. Perez Hilton

The self-proclaimed "Queen of all Media" dropped a massive amount of weight. Perez Hilton changed his diet and began working out seven days a week.

3. Matthew McConaughey

3. Matthew McConaughey

McConaughey lost more than 30 pounds for his role in 'Dallas Buyers Club'.

2. Jared Leto

2. Jared Leto

For his role in the 2013 biographical drama 'Dallas Buyers Club', Jared Leto had to lose tons of weight and shave his eyebrows.

1. Miley Cyrus

1. Miley Cyrus

The 'Adore U' singer didn't lose any weight, but her drastic hair and style change makes us all wonder what's really going on.