The 21-year-old singer, who has served as a judge for two seasons, is about to headline her first arena tour, which kicks off from February 9 in Vancouver and will also feature 'X Factor' alumni Cher Lloyd, Little Mix and Fifth Harmony, reported People magazine.
"She plans to spend next year completely focused on her music," a source said.
Even though, "she had a great run and a good time," on the 'The X Factor'. But the demanding schedule of the show conflicts with the singer's plans for 2014.