Click through to see the stars that made our top 50 most shocking celebrity transformations, and maybe even harness some beach body inspiration from these stunning celebs. A few even share their secrets, so you can get in on your very own transformation.
The top 5 in this celebrity transformation list will leave you speechless, but Mariah Carey? Her shocking transformation will really blow you away.
1. Alec Baldwin
This television star sure cleans up nicely. He looks dashing with his clean cut look and put together attire.
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2. Britney Spears
It was the meltdown that shocked the world when Britney shaved her head. Nowadays she is looking fit, fab, and yes, her hair has grown back.
3. Nicole Polizzi aka Snooki
Snooki captured our hearts during her hilarious drunk escapades on MTV’s “Jersey Shore”. But motherhood really made her change her life around and she looks fabulous with her weight loss and new personal style. Her main motivator? Her kids, of course.
4. Kylie Jenner
Kylie grew up on television, but her transformation still shocked us all. She looks ravishing with her new look.
5. Jessica Simpson
Back when she was pregnant with her daughter, the media gave Jessica Simpson a horribly hard time with her weight gain. But with the help of Weight Watchers and a vigilant diet and exercise plan, she was able to slash her weight gain for her wedding and ended up looking fabulous.
6. Jonah Hill
Once famous for his chubby physique, Jonah Hill completely revamped his image by losing some weight and cleaning up his appearance. He’s cute before, and downright sexy after. It just goes to show that changing your diet and eliminating alcohol really does work.
7. Jennifer Hudson
Hudson’s transformation was so spectacular, she was deemed the spokeswoman for Weight Watchers. She focuses on eating healthy portions, and knowing exactly what she puts into her body. While she doesn’t “work out” often, she does try to stay active to maintain that beautiful body.
8. Chris Pratt
Chris Pratt looks absolutely fantastic in his stunning transformation. It looks like he lost some weight and bulked up, and has never looked sexier.
9. Nicole Richie
It’s amazing what cutting back on the party girl lifestyle can do to a girl’s complexion. Nicole looks positively radiant in motherhood and her skin truly glows thanks to the tamed down lifestyle.
10. Kelly Osbourne
With the help of the Hoopnotica hula hoop and daily exercise, Kelly Osbourne has slimmed down and is strikingly beautiful. However, even after her stunning transformation she says that she still has days where she feels self-deprecating.
11. Chaz Bono
Chaz Bono is nearly unrecognizable after he lost all those pounds. Eating almost strictly veggies, meat, nuts, and fruit Chaz dropped from a whopping 250 pounds to a comfortable 165.
12. Perez Hilton
Always loud and outgoing, Perez Hilton makes us do a double take after he lost weight and bulked up. Losing over 70 pounds by eating healthy and exercising daily, Perez says he’s in the best shape of his life.
13. Christina Aguilera
Hard work and a balanced diet helped Christina shed the pounds for her shocking transformation. She sticks to healthy eating and exercise, and she has never looked better.
14. Seth Rogen
Hollywood funny guy Seth Rogen recently transformed himself with a dramatic weight loss journey and a cleaned up appearance. Using the 5 Factor Diet, Seth was able to shed 30 pounds to get him down to his new size.
15. Jordin Sparks
Ms. Sparks looks stunning in her before and after photo, but she was able to cut down on her weight with the help of a personal trainer and healthy eating habits. Her total weight loss? 50 pounds in a year and a half!
16. Jason Segel
Jason slimmed down with the basics: no midnight pizzas and a healthy lifestyle composed of eating right, living healthy, and exercising. His transformation makes us all want to stick to the produce section at the grocery store.
A stunning slim down, Mo’nique lost an incredible 80 pounds to get herself looking great. Her main motivators were her husband and kids.
18. Miranda Lambert
In an effort to avoid “Looking bad or being criticized” Miranda Lambert dropped an astonishing 45 pounds and looks, dare we say it, hot!
19. Peter Jackson
Thanks to strict dieting and exercise, Peter Jackson was able to cut 44 pounds from his body weight while filming The Adventures of Tintin.
20. Tom Arnold
In an effort to make sure he would be around for his son, Tom Arnold used traditional diet and exercise to drop 100 pounds! Wow.
21. Janet Jackson
This beauty underwent a shocking transformation with the help of NutriSystem for her weight loss. She doesn’t forbid herself from eating the foods she loves, but eats healthy and exercises to maintain her new bod.
22. Ricky Gervais
A couple who gets fit together stays together. Ricky and girlfriend, Jane Fallon, decided to get healthy together. Ricky ended up losing a whole 40 pounds.
23. Missy Elliot
This is one of the most intense celebrity transformations we have seen yet. Missy looks absolutely beautiful and glowing after shedding a combined 101 pounds!
24. Renee Zellweger
Plastic surgery or no plastic surgery? Either way, Renee looks great and says she is happy with her changes.
25. Jerry Ferrara
Jerry lost 40 pounds in 10 months with the help of scare tactics from his doctors and a rigid diet plan. His transformation? Smokin‘ hot!
26. Khloe Kardashian
This Kardashian dropped 30 pounds with her trainer and looks positively stunning.
After losing 180 pounds in a short eight months, Timbabland credits his positive mindset and not letting himself get in the way of his goals. His weight loss makes him look even more handsome.
28. Kirstie Alley
Saying she has an easy time with gainining and losing weight, Kirstie Alley dropped an outstanding 50 pounds.
29. Josh Peck
Seriously, that is the same guy! Josh Peck was famous for his time on the Nickelodeon show, Drake & Josh and was a cute, chubby kid. But his stunning transformations has girls around the country swooning. With a personal trainer and nutritionist on his side, Josh is breaking hearts left and right nowadays.
30. Randy Jackson
After being diagnosed with Type 2 Diabetes and struggling with obesity, he decided to get his life in check. He lost 100 pounds after going through gastric bypass surgery and incorporating a fitness routine into his lifestyle.
31. Star Jones
Star Jones dropped from a size 26 to a size 6 with the help of gastric bypass surgery and an improved diet and exercise plan.
32. John Goodman
Goodman decided to change his life by changing his eating habits. His transformation is almost unbelievable, but he did it all on his own!
33. Ricki Lake
She dropped over 130 pounds and went from a size 24 to a size 6, and says she feels much better with the change. Her overall body transformation is astonishing.
34. Jack Osbourne
The Osbournes are all over our top 50 list, and Jack looks phenomenal with his weight loss and cleaned up attire.
35. Rosie O’Donnell
Rosie cut 64 pounds from her overall body weight with the assistance of vertical gastric sleeve surgery. Her new look is positively beautiful.
36. Al Roker
Thanks to a lifestyle change, Al Roker is dropping weight from his original 340 pounds. He now says “life is terrific”. He looks terrific, to!
37. Paula Deen
Paula looks stunning and she’s helping fans get to where she is one step at a time. Skipping out on the extra sticks of butter has definitely helped, and she now offers a low-fat cookbook available for purchase.
38. Michael Moore
This star worked hard for his weight loss and he definitely looks great. His one big no-no? Diet soda!
39. Lil’ Kim
More “is it or is it not plastic surgery?” Lil’ Kim is hard to recognize in her after picture, but she sure looks great.
40. Zach Galifianakis
Making a massive lifestyle change by putting the bottle down (and picking the razor up), Zach Galifianakis is a transformed hottie.
41. Horatio Sanz
After losing 100 pounds, Horatio Sanz looks absolutely dashing.
42. Mariah Carey
Stunning before and after her transformation, Mariah looks great after she made some lifestyle changes and dropped a few pounds after picking up new boy toy, James Packer.
43. Jason Sudeikis
Jason scruffed up and got his tan on it seems, and he looks all the better for it.
44. America Ferrera
Saying she just wants to be comfortable with her body, America Ferrera dropped 20 pounds. She looks positively glowing.
45. Lauren Alaina
After her time on American Idol, Ms. Alaina lost 40 pounds. She thanks her healthy diet for this one.
46. Miley Cyrus
Miley won our hearts as Hannah Montana, but these days she’s creating her very own style. Love it or hate it, this is quite the shocking transformation.
47. Raven Symone
Thanks to 30-minute workouts, Raven has dropped 70 pounds and feels comfortable in her new skin.
48. Tara Reid
We definitely liked Tara’s look before. Her unhealthy dieting habits have turned her body from hot to…not.
49. Heidi Montag
Heidi spends more than 14 hours at the gym each day and eats a healthy diet in order to keep her bikini body. The plastic surgery helped a little as well.
50. Drew Carey
Once famous for his celebrity chub, Drew Carey says during his days on “The Drew Carey Show” he was eating junk food and drinking a lot, and generally not taking care of himself. His weight 100-pound weight loss, thanks to a balanced diet and exercise, makes him look positively dashing.