Sarah Harding and Lucy Mecklenburgh are two of the names revealed for Tumble.
The former Girls Aloud singer and 'The Only Way is Essex' star are among a host of celebrities set to try their hands at gymnastics in BBC One's new Saturday night entertainment show.
Each of the 10 famous faces will be partnered with a professional gymnast, who will put them through their paces to perform demanding routines, and each week they'll face a panel of judges and a public vote.
BBC Commissioning Executive Rachel Ashdown said: "These celebrities are embarking on a gruelling training regime combining aerial and gymnastic skills.
"They'll use them all to deliver breathtaking performances that you'd expect from the department that also produces 'Strictly Come Dancing'."
Sarah and Lucy will come up against champion boxer Carl Froch, 'EastEnders' actor John Partridge, 'Loose Women' host Andrea McLean, 'Wolfblood' actor Bobby Lockwood, Sugababe Amelle Berrabah, Dynasty's Emma Samms, Ian "H" Watkins from Steps and fitness legend Mr. Motivator.
The One Show's Alex Jones will take on the role of host while 'Strictly Come Dancing' champion and London 2012 medallist Louis Smith, Olympic gymnast Nadia Comaneci, sports broadcaster Craig Heap and world-renowned cirque artist and aerial performer Sebastian Stella will sit in the judges' seats.
The celebrities are to begin training with their professional partners and coaches in the coming weeks while the show is scheduled to begin later this summer.
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