Although we sometimes forget it, celebrities are humans just like us and their weight, body size and shape can fluctuate depending on lifestyle, health or personal habits. Here, we take a positive look at those stars who altered their habits to undergo dramatic changes and have managed to get themselves in better shape.
Whether through better diet or increased exercise, these guys offer up inspiration for those of us who struggle with keeping the pounds off.
1. Chris Pratt
Superstar actor who became part of the Marvel film universe when he took on the role of Starlord in Guardians of The Galaxy but it was as the chubby, playful Andy Dwyer in Parks and Recreation that he first really caught the public's attention.
When deciding to go up for a role in The Hurt Locker, Chris thought he needed to get in shape to land it and when producers of the aforementioned Marvel flick asked if he could do it again, he went one better. Now a fully fledged action star who fronts the reboot of the Jurassic Park franchise Pratt keeps himself fit and healthy.
2. Jonah Hill
Since bursting into public consciousness as the rude, crude teen in Superbad, Jonah Hill has transformed into an Oscar-nominated actor who has worked with the likes of Martin Scorsese.
Not only has his career changed, however, but also his look as he cut out alcohol and hired a nutritionist to transform the way he looks. His weight has fluctuated over the years but he is looking good and we hope he's feeling better for it.
3. Jennifer Hudson
She wowed us with her voice on American Idol and then used her successful music career to launch one in films as well. Since her humble beginnings as a talent show contestant, she says she has just learned to control her portion size and doesn't have food in her dressing room.
Not particularly one for working out, she does like to keep active.
4. Kelly Osborne
Singer and reality tv star Kelly was introduced to our screens via The Osbornes which followed the family's individual and collective struggles.
Now a regular on tv talk shows she has slimmed right down and says she uses the Hoopnotica hula hoop every day and works out regularly.
5. Chaz Bono
The only child of performers Sonny and Cher, Chaz is a rather inspirational character. After coming to terms with his sexuality he transitioned to a man in 2008 having been born a woman called Chastity.
After that, Chaz struggled with his weight and has since lost 85 pounds by changing his diet and eating differently saying, “I pretty much eat vegetables, meat, fruit, nuts . . . My birthday is the one day of the year I’ll do cake.”
6. Nicole 'Snooki' Polizzi
Her wild girl antics on Jersey Shore caught the attention of the nation but since becoming a mother she has toned down her partying ways and started exercising more.
“Even though I want to be healthy for myself and it feels great to be healthy, I mainly want to do it for my kids,” Polizzi said. “I just really want to be a fit mom. I want to be able to keep up with them, run after them.”
7. Perez Hilton
The media mogul who made his name covering celebrity stories, such as their dramatic weight loss or gains, had his own issues with weight until he started working out 7 days a week and doing pilates.
8. Christina Aguilera
Christina's weight has varied wildly over the years but she managed to get back down to a slender figure simply by eating right and maintaining a healthy diet.
Some speculated it was due to surgery but she set the record straight in several interviews.
9. Susan Boyle
The Scottish singer who shot to fame after her appearance on a TV talent show in Britain in 2009, lost around 70lbs when she was diagnosed with Type 2 diabetes and realized she had to lose weight for the sake of her health. Saying “I needed to stop eating sweeties and cakes. It’s the bane of my life," the singer put together a plan to get healthier.
The singer, who also suffers fro, Asperger's syndrome, has always been open about her health problems.
10. Drew Carey
Funnyman and tv personality Drew Carey said of his heavier self that it was down to drinking too much and eating junk food.
Self-help books helped him achieve his weight loss before he took on the reins of The Price is Right.
11. Jessica Simpson
Like most people who have a child, Jessica put on weight during and after her pregnancy but she arrested this development and changed it around with the Five Factor Diet, which had her eating five small meals six days a week and 25-minute workouts.
12. Seth Rogen
Another star who found success with the Five Factor diet was Seth Rogen.
The comedian and film star focussed on what he was eating more and it worked wonders.
13. Jordin Sparks
Singer extraordinaire, Jordin started eating healthier and working with a personal trainer to help her lose 50 pounds in just 18 months.
14. Jason Segel
The How I Met Your Mother actor didn't do anything special to lose weight but just stopped eating poorly.
“I’ve just been living healthy, exercising, eating right — no more midnight pizzas.”
The American comedian and actress started a weight loss regime for the sake of her husband and children and has since managed to keep the 80 pounds she lost off.
16. Josh Peck
Starting out as a child star on Drake & Josh, Josh's career seemed to be one of the heavy-set funny character but he decided to get a nutritionist and personal trainer to help him out, so determined was he to lose weight without surgery.
17. Miranda Lambert
The country singer decided to lose weight after her wedding citing body image issues and that she felt much more confident going on stage after losing 45 pounds.
18. Peter Jackson
The Lord of The Rings director was fed up of being unfit so underwent a fitness regime whilst filming The Adventures of Tintin and lost 44 pounds over that period as photos of the premiere prove.
19. Tom Arnold
Actor and comedian, Tom Arnold claims his weight loss motivation came from his son as he wanted to see him grow up.
Losing over 100 pounds through diet and exercise, he certainly seems to have turned things around.
20. Janet Jackson
Janet is arguably one of the world's biggest singers but has often struggled with her weight.
After losing weight using the NutriSystem, she is now due to give birth to her first child later this year.
21. Ricky Gervais
English comedian and writer Gervais used to be a slender young man when he tried to attain pop stardom in the 1980s.
Failing that he turned to comedy and has always been in the public sphere as a slightly heavier set man but he decided to get in shape along with his girlfriend and ended up losing 40 pounds.
22. 'Mama' June Shannon
The mother of Honey Boo-Bo, the unlikely child reality star, began a regime in 2013 but by January of 2016 she decided to undergo cosmetic procedures after fainting multiple times from strict dieting. Now claiming to have lost 150lbs, the star is hoping to shed more weight by walking and has said: '[I'm] just walking. Once you get started with the kids you don’t think about,' she said. 'You're walking and you’re like ''I've already walked three miles.'''
Posting her current successful results on Twitter, June is hoping to have more good news to share in the future.