Kelly Osbourne makes surprise appearance during Scissor Sisters set

Kelly Osbourne made a surprise appearance during Scissor Sisters' set at Mighty Hoopla in London.

The TV personality and singer surprised fans when she took to the stage during the U.K. festival at Brockwell Park on Sunday night.

The event saw Kelly join the U.S. pop-rock band for a performance of her 2005 track One Word.

Kelly appeared on stage wearing a holographic blue dress with black platform shoes, bold blue eyeshadow and her short blonde hair styled in a slicked-back look.

Accompanying the 41-year-old at the event was her three-year-old son Sid, whom she shares with Slipknot DJ Sid Wilson. The pair were in a relationship from January 2022 until ending their engagement in March 2026.

The concert marked the first time Sid had watched his mother perform live on stage. According to clips shared on social media, Kelly was also seen dancing backstage with her son.

Kelly's music career includes two studio albums, Shut Up, released in 2002, and Sleeping in the Nothing, which followed in 2005. Her biggest chart success came with her father, Ozzy Osbourne, when the pair collaborated on a cover of the Black Sabbath ballad Changes.

Alongside the Osbournes star, the band were also joined on stage by British actor Sir Ian McKellen and singer-songwriter Belinda Carlisle during the annual music event.

The surprise appearance comes almost a year after Kelly admitted she was struggling following the death of her rock icon father, who died in July last year aged 76.

Just months after Ozzy's death, it was revealed that Kelly and fiancé Sid had quietly ended their engagement, seven months after the DJ proposed.

Kelly has since sparked rumours of a new romance with Los Angeles-based hairdresser Kiinicki, although neither has publicly confirmed the speculation.

Scissor Sisters, consisting of Jake Shears, Del Marquis and Baby Daddy, are currently touring with their The Kiki Continues reunion tour.