Demi Lovato, the youngest judge for the new cast of X Factor, is simply sparkles on this month’s cover of Teen Vogue.  The Disney turned pop star is looking more beautiful and sophisticated than ever before with softly braided hair, a strong brow and romantic florals.

She opened to the magazine up about purging toxic friends after getting back from rehab. "I did kind of a friend cleanse right after rehab, where I weeded out people who didn't have my best interests at heart," she told Teen Vogue.

Demi, who has become an unofficial spokesperson for body image, was recently on Katie Couric’s new self-titled daytime talk show discussing being bullied in school, battling bulimia and her constant every struggle food.

Photos: Demi Lovato in the November issue of 'Teen Vogue' via 'Teen Vogue'