Rita Ora has quit The X Factor after appearing for just one season.
With both Cheryl Fernandez-Versini and Nick Grimshaw having left the ITV talent show, the only judge now remaining from the 2015 line-up is Simon Cowell.
An X Factor spokesman said: "Rita brought a great energy to the show last year and did a brilliant job mentoring the girls' category, leading Louisa to victory.
"We wish her all the best with her music and film plans for the rest of the year."
The 25-year-old singer joined last year's series of The X Factor after moving over from The Voice UK.
The Poison star's exit follows last month's news that Cheryl will not be returning as a judge.
She quit in April to focus on her music career, saying in a statement: "I have learnt so much and enjoyed nurturing talent but I've missed making music and am excited to be recording again."
Radio DJ Nick had already quit as a judge, while the show's presenters, Caroline Flack and Olly Murs, also confirmed they would not return.
Caroline and Olly's exit made way for the return of X Factor favourite Dermot O'Leary, who confirmed in March that he was coming back to the show.
The 42-year-old said he was "excited to be back" as presenter after a year away from the job.
Dermot, who had been a mainstay of the show for eight years, left in 2015, saying it was "time for me to move on".
However, he agreed to return, saying: "I'm very flattered to be asked back to the X Factor, and am currently dusting off my dancing shoes."