The pop punk band toured with The Saturdays last year, and while they initially thought they would easily beat them in a dance-off, they were shocked by howe many cheesy disco moves they knew.
The band's Sam Halliday told BANG showbiz: "We showed them some dance moves, the ping pong and The Go loose - but they have loads, they taught us to screw light bulb, shape the fish, they've got some good moves, they are party girls!
"Especially Vanessa [White] - she took us for a night out in Cardiff after out show there, and we had a great party."
While Twenty Twenty - which also includes Jack Halliday and Sonny Watson-Lang - got on great with the five piece girl band, they couldn't understand why they always rehearsed in their dressing gowns.
Sonny added: "They used to go to rehearsals very day in their dressing gowns. They rehearse in them all the time, so you'd walk into soundcheck and they'd be there in their dressing gown and curlers!"
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