JLS and One Direction are caught out!

X Factor boy bands JLS and One Direction hit the black and white carpet for the premiere of Pokemon Black and White but were caught out by a trick gaming question.

The popular stars all claimed to be fans of the Pokemon franchise, but were unable to identify fake Pokemon characters Nubemon and Nubechu when asked.

One Direction are currently touring the UK with X Factor contestants including Cher and Paije.

JLS, who are in the studio working on their third album, said they have finished eight tracks so far, but were coy when questioned about the album's style.

One Direction performed their cover of Rihanna's Only Girl (In The World) at the premiere and rewarded fans with signed posters.