Lunges or Lap Band? 12 Celebrity Weight Loss Transformations

Nicole Fukuoka on 6 Nov 2013 at 9:00am

headTo boost their red carpet confidence, many celebrities have committed themselves to diet, intense training and weight loss surgery.

Scroll down to see exactly how these 12 celebs revamped their image, slimmed down and toned up.

1. Jennifer Hudson

jennifer hudson before and after weight loss

The songstress turned actress slimmed down from a size 16 to a 6.  After giving birth to her son, she used Weight Watchers and worked out with a personal trainer to trim pounds.

2. Kelly Osbourne

kelly osbourne before and after weight loss

The TV host and daughter of rocker Ozzy Osbourne, dropped 50 pounds through healthy diet and exercise.

3. Jordin Sparks

jordin sparks before and after weight loss

The American Idol alum dropped 50 pounds after changing her diet and adding exercise to her daily routine. Jordin says she enjoys Zumba, circuit training and running (while listening to her boyfriend Jason Derulo on her iPod).

4. Seth Rogen

seth rogen before and after weight loss

The comedian lost 30 pounds in 9 months after working out with a personal trainer.

5. Kirstie Alley

kirstie alley before and after weight loss

The actress has struggled for years with yo-yo dieting, but dropped 100 pounds during her stint on Dancing With the Stars.

6. Valerie Bertinelli

valerie bertinelli before and after weight loss

Valerie Bertinelli lost 50 pounds with the help of Jenny Craig and increasing her activity level.

7. Drew Carey

drew carey before and after weight loss

The comedian lost 80 pounds by sticking to a healthy diet and exercise regimen. He says this change was necessary as his weight started causing health problems.

8. Ricki Lake

ricki lake before and after weight loss
The actress, who rose to fame for her role as Tracy Turnblad in Hairspray, lost 100 pounds on the Atkins Diet before the start of her talk show in 1993. She's managed to keep the weight off and even dropped another 20 pounds on her recent stint on Dancing With the Stars.

9. Mo'Nique

Monique before and after weight loss

The comedian reached 300 pounds at her heaviest, and decided she needed to make a lifestyle change so she could be healthy for family.  She's been on a weight loss journey for the last 3 years- with a goal weight of 180.

10. Janet Jackson

janet jackson before and after weight loss

After years of yo-yo dieting, Janet Jackson slimmed down using NutriSystem and exercising up to 6 days a week. She went from 180 pounds to 120, in just four months.

11. Randy Jackson

randy jackson before and after weight loss gastric bypass

Our favorite judge from American Idol lost 100 pounds with gastric bypass surgery in 2003.

12. Governor Chris Christie

chris christie before and after weight loss lap band

New Jersey's governor, Chris Christie, says he's "halfway" to his weight loss goal after lap band surgery earlier this year.

Want to see more incredible weight loss surgery before and after pics?  Click here!