Below, members Perrie Edwards and Jade Thirlwall break down what sets them apart from girl groups past.
But instead of trying to smooth out those differences, they embraced them.
On their 2015 album,Get Weird, they channeled everything from doo-wop to 80s pop.
Credit: Mark Hunter
Theres something for everyone, Edwards says of their eclectic sound.
Aesthetics dont hurt either.
Adds Thirlwall, Were all the same height and [look] really good together.
We want to convert people.
Were going to pull out all the stopsa lot of dancing, a lot of crowd involvement.
Were quite cheeky, and Americans love that about us British people.
A version of this story appears in the Nov. 25 issue of EW, on stands now.
