First they auditioned on the x factor and then they made it all the way 2 the final two alexandra burk vs jls but jls came in second and alexandra burk came in 1st but they also started their own show and thats how they got famous.
How Did Jls Become Famous?
The came second on x factor
They came famous by becoming 2nd on last years x factor.
They became famous because of hard work they cam 2nd place in x factor
On the x-factor
I don't no but they have my anitials jls I luv them and I want to be famous