Former 'X Factor' winner Leona Lewis has said that the show has "evolved" since she took part in it.

Speaking to X magazine, she said: "What’s incredible is how much the show has evolved since I did it."

"[The] live auditions for a start - that’s a huge difference. And the choreography, that’s a big step."

"I think it’s great for confidence and stage performances, but it’s got to be right for that person."

"It’s all about tailoring and it being right for each individual, that’s all. Not everyone who wants to sing necessarily wants to dance."