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Photo courtesy: Justin Gaston's Twitter

Justin Gaston, the ex-model who's best known for being Miley Cyrus' ex-boyfriend, is getting ready for his big performance on tonight's American Idol.

The Idol stage may be intimidating to some, but the long-haired country cutie isn't new to the stage. A few years ago, Justin was a contestant on Nashville Star, which is where Miley's dad, Billy Ray, first noticed him.

The 21-year-old is currently one of the aspiring singers on the 24/7 web show, If I Can Dream. It's kind of like Big Brother for singers! Justin says he's inspired by the Beatles, James Taylor and Jackson Browne. What? No Miley Cyrus.

AI alum Brooke White will be performing alongside Justin tonight singing a duet version of the If I Can Dream theme song.

Let's see if this guy sings as good as he looks.