Kelly Osbourne has been famous since she was a teenager, which basically means the entire world has watched her grow up, struggle, and change in real-time. It’s a lot for anyone. But lately, the conversation hasn't been about her music or her TV hosting; it’s all about her body. People keep asking how did Kelly Osbourne lose weight, and honestly, the answer is way more complicated than just "diet and exercise."
She’s lost about 85 pounds over a series of years, but if you look at her today—especially in early 2026—she looks different than she did even two years ago. It’s been a journey of surgery, lifestyle overhauls, and some pretty intense personal grief that she’s been very vocal about.
The Surgery She Refuses to Hide
Most celebrities act like they just woke up one day 50 pounds lighter because they "drank more water." Kelly isn't that girl. In 2020, she went on the Hollywood Raw podcast and just blurted it out: she had gastric sleeve surgery.
"I had surgery; I don’t give a f*** what anyone has to say," she told the hosts.
But here’s the thing people get wrong about weight loss surgery. It’s not a magic wand. Kelly has explained multiple times that if you don’t work out and you don’t eat right, you’ll just gain the weight back. For her, the gastric sleeve was a "gentle nudge" in the right direction. It physically changed how much she could eat, but the mental work started way before that. She actually did a full year of therapy before she even went under the knife. She knew she was an emotional eater—basically swapping her old substance addictions for food—and she had to fix her head before she could fix her body.
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The Gestational Diabetes Wake-Up Call
After welcoming her son, Sidney, in late 2022, things changed again. Pregnancy is hard on the body, but for Kelly, it came with a diagnosis of gestational diabetes. That was a massive turning point.
To manage the condition and protect her health, she had to get serious. Fast.
- No sugar. Completely cut out.
- Zero carbohydrates. A massive shift from her previous habits.
- Rapid weight loss. Because she was eating so "clean" to manage her blood sugar, the baby weight fell off almost instantly.
She admitted on the Scheananigans podcast that she might have even "gone a little too far" with the post-baby weight loss. She was on a mission to lose the pregnancy weight, and then she just kept going.
The Ozempic Controversy: Did She or Didn't She?
You can’t talk about celebrity weight loss in 2026 without mentioning Ozempic. The rumors have been everywhere. Kelly’s mom, Sharon Osbourne, has been incredibly open about using the "skinny jab" and how it made her lose so much weight she actually struggled to put it back on.
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Kelly? She says she didn't use it.
"I know everybody thinks I took Ozempic. I did not take Ozempic," she told Extra. However, she did spark a ton of backlash by defending the drug. She called it "amazing" and even suggested that people who hate on it are just "pissed off that they can't afford it." That didn't go over well with... well, anyone. But despite her praise for the medication, she maintains that her own transformation came down to that strict post-pregnancy diet and her previous surgery.
Grief and the Recent "Ill" Comments
If you’ve seen photos of Kelly recently, you’ll notice she looks thinner than ever. Sadly, 2025 was an incredibly dark year for the Osbourne family. The death of the legendary Ozzy Osbourne in July hit Kelly harder than anything.
When fans started commenting on her Instagram telling her she looked "ill" or "too skinny," she didn't hold back. In a series of videos, she basically told the trolls to back off. She explained that she hasn't been able to eat because she’s grieving her father.
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Grief does weird things to the body. For Kelly, it meant her appetite completely vanished. Sharon backed her up on Piers Morgan Uncensored, saying quite bluntly that Kelly "can't eat right now" because she’s heartbroken. It’s a stark reminder that what looks like a "fitness goal" to a stranger on the internet is sometimes just a person trying to survive a tragedy.
The Daily Routine: What She Actually Does
When she isn't dealing with the extremes of life, Kelly does have a structured way of staying healthy. It’s not just about what she doesn't eat.
- Intermittent Fasting: She’s been a fan of the 16/8 method for a while. She usually skips breakfast, starting her day with just coffee and a green juice, then eating her meals within an 8-hour window.
- Plant-Based Leanings: While she isn't a strict vegan anymore, she sticks to a lot of whole, natural foods. Think grilled salmon, quinoa, and tons of greens.
- Hula Hooping: Yeah, seriously. Her trainer, Lacey Stone, helped her find ways to move that weren't "boring." She’s a big fan of hula hooping for cardio because it’s fun and actually works the core.
- HIIT and Strength: She mixes in high-intensity interval training and bodyweight moves like lunges and squats to keep her muscle tone up, especially since rapid weight loss can sometimes leave you feeling "soft."
Actionable Takeaways from Kelly's Journey
If you're looking at Kelly Osbourne’s story and wondering what applies to "normal" life, here are the real-world lessons:
- Fix the "Why" first. Kelly spent a year in therapy before surgery. If you're eating because of stress, boredom, or trauma, no diet in the world will stick until you address the root cause.
- Tools aren't cheats. Whether it's surgery or medication, these are tools that require lifestyle changes to work long-term. There is no such thing as a "lazy" way out when it comes to metabolic health.
- Listen to your medical red flags. Her gestational diabetes was a scary diagnosis, but she used it as a catalyst to finally quit sugar. Sometimes a health scare is the best motivation.
- Ignore the "Snap Back" culture. Kelly hid for nine months during her pregnancy because she was terrified of being fat-shamed. Give yourself grace. Your body goes through a lot, and the public's opinion of your size is the least important thing about you.
Kelly’s weight loss isn't a straight line. It’s been 15 years of ups and downs, surgeries, baby weight, and now, the physical toll of losing her dad. It’s messy, it’s public, and it’s very human.