JLS singer Aston, who appeared on Strictly last year, joins McFly drummer Harry, winner of the 2011 series, and Olympian Louis, who won in 2012.
The trio will take to the stage together in new theatre show Rip It Up, where they will perform to hits of the 60s.
Songs by the likes of The Beatles, The Who and The Rolling Stones will provide the backing to the boys' dance moves.
Louis, who first performed in Rip It Up last year, said: “Performing in Rip It Up last year was one of the hardest and most challenging experiences I have ever attempted, including competing at the Olympics.
“The fact that I jumped at the chance to be part of this brand new ‘60s version of it also shows how much I enjoyed the whole thing.
“I’m excited to be performing alongside Aston, especially as we grew up together, and equally with Harry.”
Harry added: “I love to dance. Along with playing in a band there’s no better feeling than to be on stage dancing.
“I was brought up listening to 60s music by my parents, which makes this whole show even more exciting for me to be a part of.
“Aston and Louis are both great movers so I’m looking forward to sharing a stage with them to put on the best show possible.”
Rip It Up's tour starts from September. You can buy tickets HERE.