Beyoncé reveals 'X Factor' shock

Beyoncé has claimed that she was shocked by the impact of her X Factor performance last year.

The US popstar appeared on the ITV1 talent show's final in December, singing 'Listen' with eventual winner Alexandra Burke.

Speaking to Celebs On Sunday magazine, Beyoncé explained: "I watched the show because I knew I was going to sing with one of the contestants, but because I don't live in the UK I didn't know the impact it was going to have.

"The day after I performed, I've literally never had so many people say they watched me. Every single person I met said, 'I saw you on X Factor', and I was like, 'This is weird!'"

Predicting a bright future for Burke, the star added: "She's so talented and beautiful and her voice is so soulful. Actually, I wanted her to open my tour for me, but she hadn't finished her album so she couldn't do it."

Beyoncé was said to be in talks for a possible collaboration with Burke last month.