12 Celebrities Health Transformations - How They Reached their Happy, Healthy Weight

Adele has never shared her weight—her health transformation has always been about feeling her best both physically and mentally. It's not about the scale—she decided 'to get in shape for [herself]' in 2015, according to Rolling Stone, and reduced her sugar intake, but not carbs—'I’d never deprive myself like that!'.

Christina Aguilera has been on a long journey to transform both her mental and physical health since 2013. She not only enhanced her mental health, but lost 50 pounds back in 2013—'it’s amazing what having some personal time can do, not only for the body but also for the mind and the spirit,' a source told People. 'She has been trying new types of foods and exploring new methods of exercise. Not for diet or weight, but more for her mind and well being and overall sense of good health.'

Jennifer Hudson dropped from a size 16 to a size 6 in 2010 after teaming up with WW (formerly Weight Watchers), and she’s kept the 80 pounds off since. 'I don't really have time to do much [working out], so I really just watch what I eat,' the singer/actress told Good Housekeeping last year. 'I'm very mindful of what I'm eating, so I just try to pace those meals throughout the day. I'm very conscious of how I fuel my body.'

Since she made her TV debut on her family’s reality show, Kelly Osbourne has embraced the many mental health benefits of eating wholesome, healthy foods and moving more, and in turn, lost 70 pounds. Participating in Dancing With the Stars in 2009 is where she learned some of her healthiest habits. '[My partner, Louis van Amstel] made me eat turkey burgers and salads and explained to me that adapting a protein rich diet would keep me energised,' she told Shape magazine at the time. 'Then I started losing fat and realised, 'Oh, it’s true what they say: Diet and exercise really work!''

In 2014, Melissa Joan Hart opened up how working out, for her, is all about spending quality time with friends and family, and how losing 75 pounds after giving birth, was fun as it she built healthy life habits that revolved around being social. She told People she was initially inspired by her sister-in-law’s fat loss: 'Sally taught me that you want to feel good about yourself. When she first started losing fat, she got compliments and they drive you to want to do more.' But it's the social element of fitness that keeps her motivated to work out. 'I chitchat with friends on walks or run with my husband," she told Us Magazine.

Last year, at an event for trainer Tracy Anderson, Lena Dunham shared how healthy, for her, is about making sure she's working out and eating well, loving her body and in turn, making sure her mental and physical health are as in check as possible. Anderson told People: 'She has significant health issues [OCD and endometriosis], so working out for Lena isn't about making her body look different, but making her body feel better'.

America Ferrera has vocally embraced self love and healthy living since her Sisterhood of the Traveling Pants days, focusing more on body positivity than jean size. 'How much time have I wasted on diets and what I look like? Take your time and your talent and figure out what you have to contribute to this world,' the star told Cosmopolitan for Latinas in 2012, 'Get over what the hell your butt looks like in those jeans!'

Country singer Miranda Lambert lost about 20 pounds back in 2014 and has kept it off since—without any miracle diet. 'Diets don't work as you get tired of them. I've tried everything," she told Women’s Health. 'I liked eating grilled chicken breast and sweet potato salad—there was no miracle.' For the country singer, it wasn’t about the scale, but how she felt as she approached 30. 'I just thought, maybe if I get ahead of it a little, I won't have to work so hard later in life,' she said to People.

Being healthy isn't just about eating your veg and moving—far from it. Building a healthy body, for Melissa McCarthy, has revolved around making sure she gets enough sleep—yes, it's important. Back in 2011, Melissa McCarthy told People her body was a 'work in progress,' but since then, she’s lost a reported 75 pounds. She’s now a size 14, and attributes her fat loss to her laid-back lifestyle. 'No trick, nothing to tell, just super boring life. You bring it real down, you don’t do anything too crazy and you go to bed at 7:30pm — that's the trick,' she told Extra.

Slow and steady wins the race—and in turn, helps you adapt healthy habits for life, if you're American Idol alum Jordin Sparks. Her favourite healthy habit? Walking every day.

She lost 50 pounds in 18 months back in 2012, according to E! News. 'I wanted to be healthy,' she told Shape at the time. 'I remember thinking, 'I'm in my prime. I should be happy and fit.'' Sparks started walking every day and watching her portion sizes, then worked with a trainer to build muscle. 'There's no quick or magical way to lose fat,' she told Redbook. 'You just have to do it the natural way—eating well and moving more and sticking to it—and be able to do it at your own pace.'

After giving birth at 50 years old last year, Janet Jackson lost 70 pounds working with trainer Paulette Sybliss. 'I started training her about six weeks after she had Eissa. We had a very fun training schedule,' Sybliss told E! News. 'We trained four times a week for 45 minute sessions, no more than an hour.' Jackson respects her body and practices self love by eating well 90 to 95 percent of the time, and enjoying any food she wants in moderation. 'She doesn't believe in cheat day at all. If she feels that she needs to have a chocolate cake, [she can] go ahead and have a chocolate cake.'

Highlighting the power social media can have in holding you accountable, Khloe is one celebrity who has documented her healthy habits and prior fat loss journey on Instagram. She's shared many posts of her frequently working out, and eating meals full of protein and nutrient rich vegetables. Healthy body, healthy mind.