Nicole Scherzinger has broken down in tears more than once while filming The X Factor boot camp rounds.

The emotional judge recently split from Formula 1 racing driver Lewis Hamilton after five years together and is said to have been in talks to try and patch things up.

The former Pussycat Doll could not control her emotions and started crying as she decided whether to send home a singer-songwriter named Sheena, the Daily Mirror reported.

And when another contestant Hannah, 16, started crying, she set Nicole off again.

Nicole urged the young hopeful to keep it together for her performance and added: "We can cry rivers later."

The new series of the ITV show includes a harsh new rule, in which contestants are told they have made it through to the judge's houses round, but can then be replaced by other performers.

Nicole reportedly raced backstage to console a female contestant who had managed to hold on to her place in the next round for the whole session, only to lose it at the very last minute.