Inside Kelly Osbourne’s Transformation After Shocking Weight-Loss

Kelly Osbourne has undergone a shocking transformation over the years, and RadarOnline.com can reveal all of the details, and how she’s done dealing with trolls.

Ozzy and Sharon Osbourne’s daughter channeled her inner Madonna when she performed the Queen of Pop’s Papa Don’t Preach at the Lane Bryant Plus-Size Fashion Show in February 2003.

Kelly dazzled from every angle at the 2010 American Music Awards. For the event, she slipped into a black, strapless dress that emphasized her décolletage.

At the 2011 Art of Elysium’s “Heaven” Gala, the former Dancing With the Stars contestant made her presence known in standout fashion, featuring a black lace sleeveless top and a pleated A-line skirt.

Her whole ensemble was in sync with her simple black pumps.

Kelly dazzled in a black gown at the 2015 MTV Video Music Awards, with her light purple hair dominating conversations all night.

“Basically my color has become me. The first time I dyed it and looked in the mirror, I saw myself, and I felt like me,” she told People of her lavender hair. “I’ll never be a natural girl. I’ll never be normal or simple. The most insulting thing someone said to me was to call me ‘beige.'”

The Come Dig Me Out singer delivered a show-stopping appearance at Stella McCartney’s Autumn 2016 Collection Event. Showing off her signature style with confidence, she strutted to the show in a stylish layered outfit that consisted of a black coat, a multi-colored dress, and a green clutch bag.

Who’s that girl? Kelly looked unrecognizable in her head-turning outfit at Just Jared‘s 7th Annual Halloween Party. She ditched her purple hair and opted for a prominent red wig as she cosplayed Myrtle Snow from American Horror Story: Coven.

That year, she underwent gastric sleeve surgery that helped her lose 85 pounds.

“I had surgery; I don’t give a f— what anyone has to say,” she revealed on the Hollywood Raw podcast. “I will never ever ever lie about it ever. It is the best thing I have ever done.”

She also began working out and eating right to aid her weight-loss journey.

According to Kelly, the procedure also helped with her drug and alcohol addiction issues.

“It cuts out this hormone that if you have addiction issues, it stops your craving and it makes you not emotionally eat, which is a huge problem for me,” she explained.

A pregnant Kelly was spotted out and about for a Dior show in 2022.

In a 2024 interview with People, she confirmed she gained 100 pounds during her pregnancy.

“I just didn’t want pictures out there. I didn’t want to face it and have people be like, ‘Oh, she’s a moose!’ So I just cut the problem out,” she admitted.

Kelly was spotted looking extremely thin when she stepped out for her 39th birthday celebration.

In a September 2023 conversation with Scheana Shay on the Scheananigans with Scheana Shay podcast, she revealed her gestational diabetes diagnosis during pregnancy led her to lose a lot of weight.

“How they figured out I was gestational was that I was gaining a lot of weight, but I wasn’t eating that much,” she shared. “And it turned out that the placenta blocks the way your body filters through sugar, and it will go one way or the other, where you’ll lose a lot of weight or gain a lot of weight, and I gained a lot of weight.”

She added, “I was on a mission after having the baby to lose all my baby weight. And then I was like, well, I lost all the baby weight, let’s see how far I can go with it. [I] went a little bit too far but [I] stopped.”

Kelly showcased a noticeably leaner frame at the 66th Annual Grammy Awards.

Amid the buzz surrounding her transformation, she told Extra she did not take Ozempic.

“I don’t know where that came from,” she added. “I made some comments about Ozempic recently, where it was like 50 percent of the people hated it, 50 percent of the people liked it. But the truth is, my opinion used to be the same as the people who didn’t like it until I met somebody who lost weight from Ozempic, and it changed their life.”

Once again, Kelly shut down trolls after she appeared markedly slimmer at the BRIT Awards 2026.

“There is a special kind of cruelty in harming someone who is clearly going through something,” she wrote on her Instagram Stories. “Kicking me while I’m down, doubting my pain, spreading my struggles as gossip, and turning your back when I need support and love most.”

She added, “None of it proves strength; it only reveals a profound absence of compassion and character. I’m currently going through the hardest time in my life. I should not even have to defend myself. But I won’t sit here and allow myself to be dehumanized in such a way!”