"American Idol" runner-up Adam Lambert is transforming from rocker to glammed-out vampire for Halloween!

Lambert dished on his holiday plans to Radar Online, revealing, "I'm going as a glampire!" Adam confessed that he's a fan of Hollywood's hottest bloodsuckers. "I love Twilight, I love vampires, I'm a big fan, so I decided to go as a vampire who likes to glam it up."

Lambert's still-untitled debut album drops November 24.