Kelly Rowland has warned of “fireworks” with fellow X Factor judge Tulisa Contostavlos when the live shows begin.

The former Destiny’s Child star and N-Dubz singer Tulisa have been getting along well so far – but Kelly reckons trouble could be in store.

“Tulisa is very strong-minded and I love that about her. We have all got on pretty great so far, but that’s about to change,’ she told New! magazine.

“Up until now we’ve all been on the same side, but when it’s the live finals, and we have our own acts to defend, you’d better know there are going to be fireworks.”

Kelly, who is mentoring this year’s girls, also hinted she could have a winner on her hands.

“There is enough talent in any category to win it, but the girls are a little bit special this year. It’s the girls who moved us all to tears. I honestly think we have a girl who can sell millions of records,” she revealed.

And the star insisted 16-year-old hopeful Janet Devlin could overcome her jitters to triumph on the ITV show.

“With young artists, it’s all about how they are as people and who they have around them and she has a really great family,” she said of the schoolgirl.

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