They've managed to avoid the chop from the X-Factor week in week out.
So whether you love them or hate them, John and Edward are here to stay.
And it turns out Jed-mania is spreading. Newsround met another pair of identical twins called John and Edward.
John thought it was "quite funny and exciting" that another pair of twins were in the spotlight - but he wasn't too impressed with their singing!
"Their dancing and singing is rubbish, but they're good entertainers."
And his brother Edward was a bit nicer: "They make good TV presenters," he said.
The X Factor courtesy of ITV1