Katy Perry is a worldwide artist and has been in the music industry longer than JLS, so at the moment, she is more successful. But in the UK, JLS have had more number 1s, so JLS are more successful than Katy Perry in the UK only.
The most successful British boyband is jls
Love You More.
She Makes Me Wanna
No but they probably will b soon
JLS are very successful. They have had various number 1 hits and have won many awards.
jls
well there is lots, Katy Perry, Jessie J, Rihanna, Pixie Lott, Olly Murs, Lady Gaga, The Wanted, One Direction, JLS, Ed Sheeran, Dionne Bromfield,
JLS.
no she isn't the acts announced so far are alesha dixon, shontelle, Katy perry, jls, akon, kelly clarkson, Leona Lewis, James Morrison, Daniel merryweather and mark ronson, the saturdays, blue, Lionel Richie, ciara and enrique
so far there have been these guests: Usher, Joe McElderry Diana Vickers Katy Perry Micheal Buble Cheryl Cole Rhianna Bon Jovi Jamariquire Kylie Minouge Shane Ward JLS Take That Westlife There were also some guests whilst dannii was away in the auditions e.g. Katy Perry Pixie lott Natlie Imbruglia, Nicole Scherzinger, Geri Halowel and in the Judges houses there were Will.i.am, Natalie imbruglia, Sharon Osborne, and Sunita.
There have been various boybands on The X Factor as there is a "Groups" category. The most successful boyband from The X Factor is JLS.
jls even though they are wierd and i hate them