Music's 10 Sexiest Men 2012
1. Adam Lambert (26% of the vote)

Welcome to Rosewood, Adam Lambert.

ABC Family's buzzy teen soap "Pretty Little Liars" is welcoming the former "American Idol" finalist for the Halloween episode in the third season, the Hollywood Reporter confirmed.

Lambert will appear as himself in a scene opposite Lucy Hale and is scheduled to perform two songs in the October hour. Hale, one of the show's four leading ladies, recently inked a deal with Hollywood Records and is expected to release an album next year.

This will be the second Halloween episode for "Pretty Little Liars." Last season's served as a prequel.

There had been speculation that Lambert, who was a finalist on season eight of Fox's "Idol," may be returning to the competition series in some capacity, though earlier this month he called it "a beautiful rumor" and said that he would "jump at the chance" if approached. Jennifer Lopez and Steven Tyler recently departed the series as judges.

Although he has appeared on talk shows and several times on "Idol," this will be Lambert's first acting debut on the small screen. He previously starred alongside Val Kilmer in a stage-to-screen DVD, "The Ten Commandments: The Musical."

"Pretty Little Liars" airs Tuesdays.