Judging stints on reality shows can be fairly short these days, but Demi Lovato is bucking the trend and returning to "X Factor" for a second season. The singer/actress will join Simon Cowell and two yet-to-be named co-judges for the upcoming third season of the FOX series.

Last year, Lovato, 20, became the youngest judge when she joined Cowell, L.A. Reid, and Britney Spears on the panel. Spears and Reid are not returning, and host Khloe Kardashian is also not coming back for the new season.

Cowell announced the news on Thursday, saying: "I couldn't be happier that Demi wants to come back this year. She's a superstar in her own right and was a fantastic mentor last year. Even though she can be really, really annoying, I truly enjoyed working with her and so did the artists. I'm especially pleased she's back."

Lovato added: "I am so excited to return as a judge and mentor on The X Factor. Last season was an unbelievable experience and I really enjoyed developing personal relationships with the contestants and the panel. I look forward to taking my previous experience and applying it to make this season even better."

Auditions for the new season continue in New Orleans, Louisiana, next month, as fans wait to see which two superstars will fill the vacant judging spots.