Pop star Rita Ora has ditched her judging job on Britain's The Voice to become a mentor on rival reality TV show The X Factor.

The R.I.P. hitmaker joined the The Voice last year (14) but has now exited after just one series to take up a place on the panel of Simon Cowell's talent competition The X Factor.

She will be joined by returning judges, pop star Cheryl Cole, also known as Cheryl Fernandez-Versini, and music mogul Cowell, plus new addition, British radio DJ Nick Grimshaw.

Ora, who worked as a guest judge on The X Factor in 2012, says, "I am excited to be coming back to The X Factor - I had a ball here in 2012. This is a journey I can't wait to embark on to find some talented singers. It's the new generation taking over. Booooom (sic)."

Cowell writes on Twitter.com, "The best kept secret in TV is out!! But I am really happy with the new judging line-up for X Factor this year. It's going to be a lot of fun... We met a lot of people. I really believe everyone on the show this year is excited about finding someone who has star potential... We have always had great judges. And I will always be thankful for their passion and expertise... I have (no) idea what the show will look like but I feel both excited and nervous. It's going to be very different! Embrace the madness."