'The X Factor's 4th Impact have been teaching Cheryl Fernandez-Versini how to pose.

4th Impact

4th Impact

The girl group's mentor on the show has been in the music industry for over 13 years but has admitted her protégés have been teaching her some new tricks when it comes to taking a good photo.

During an interview on 'The Radio 1 Breakfast Show with Nick Grimshaw' on BBC Radio 1, 'The X Factor' judge asked: "Has Cheryl taught you any tips on how to pose and how to have your picture taken?"

The 'Crazy, Stupid Love' singer quickly retorted: "They are giving me tips. They've got it in the bag."

The sisters - Almira, Irene, Mylene and Celina Cercado - are loving their time on the show and claimed they couldn't imagine having anyone other than Cheryl as their mentor.

They said: "We never get tired of like practising and filming everything with our mentor. She's so kind to us. She's the sweetest mentor that we can have."

Pretending to be offended, Nick - who mentors the boys category - replied: "Unless you had me of course."