Former music star Kelly Osbourne rolled back the years and looked incredible as she joined the Scissor Sisters at Brockwell Park for Mighty Hoopla in front of 25,000 people11:11, 01 Jun 2026Kelly Osbourne returned to the stage after almost 20 years away as she wowed the huge crowd at Mighty Hoopla.‌She rocked the festival with the Scissor Sisters after being invited up by Jake Shears at the Brockwell Park event on Sunday in front of around 25,000 people - and she's clearly still got it, despite leaving her career behind decades ago.‌The star, who released studio albums Shut Up and Sleeping in the Nothing, decided to fully transitioned to TV - but music still holds a place in her heart.‌She took Jake's hand as the pair belted out the tunes as she wore an attention-grabbing blue dress and big black high heels. The surprise guest went down at storm, following Lily Allen's headline set to open the weekend with JLS, Alexandra Burke, Cascada and Jessie J also performing.Content cannot be displayed without consentVideos of Kelly on stage were quick to circulate on social media, with many fans pointing out how fantastic the singer, daughter of rock icon Ozzy Osbourne, looked as she beamed throughout.‌The Osbournes star is still mourning the loss of her beloved dad following his death last year, aged 77 and despite this, she has been forced to fire back at callous comments about her appearance.Mum-of-one Kelly, who has put on a united front with her mother, Sharon, and brother, spurned vile comments online, with one cruel keyboard warrior claiming she "looks like a dead body".‌Sharing the unsavoury comment on her Instagram page after been plagued by rumours she's been using weight loss jabs, Kelly responded: “Literally can’t believe how disgusting some human beings are! No one deserves this sort of abuse!”Kelly has always spoken candidly about her weight and the pressures of growing up in the public eye after shooting to fame on the smash-hit reality show, The Osbournes.Talking on The Osbournes podcast last year, she said: “I got pulled into the head of the agency’s office and he … gave me a whole speech about how I was too fat for TV and I needed to lose weight, and that if I lost weight, I would look better. And he was just saying, ‘You’re not a movie star, but you could be one if you lost weight.'”‌Months after her dad's death amid dealing with a torrent of abuse, Kelly recently posted a heartbreaking message about grief.Explaining that it the pain never ends, but "changes shape", she said: “Some grief doesn’t end. It changes shape. It becomes a weight you learn to carry, the ache woven it your day.Article continues below"Making it through doesn’t mean leaving it behind. It means finding strength to live and love and keep going even with forever resting heavily on your heart…”Changes star, Ozzy, died at home with wife Sharon, 73, and his children by his side, back in July 2025. The beloved Brummie died just weeks after he took to the stage for one final time with his bandmates at Villa Park in Birmingham.Like this story? For more of the latest showbiz news and gossip, follow Mirror Celebs on TikTok, Snapchat, Instagram, Twitter, Facebook, YouTube and Threads.