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The Evolution of Adam Lambert

From "American Idol" season 8 hopeful to the belle of the glitter-pop ball, THR traces the evolution of the glam rocker whose highly anticipated album "Trespassing" is out this week.

Adam Lambert NewNowNext Awards - H 2012
Getty Images

Since season 8 of American Idol kicked off, we have watched the Indianapolis-born, San Diego-raised Adam Lambert blossom from caterpillar to butterfly right before America's eyes.

PHOTOS: Adam Lambert: A Retrospective in Pictures

From his earliest moments on the stage, when long-sleeved flannel shirts and jeans were the height of Hollywood Week fashion, to the glammed-up leather and studs Idol finale number that had jaws dropping, Lambert has always looked good, no matter what the effort.

But it was on Idol's live shows that the then 27-year-old truly wowed with a keen sense of theatrics that made his performances tune-in musts. Since coming in second to Kris Allen, the rocker has been able to spread his wings far beyond continental borders, touring internationally with his Glam Nation trek in 2010 and collaborating with the iconic British band Queen.

PHOTOS: Adam Lambert Performs on 'Jimmy Kimmel Live!' 

With the release of his highly anticipated sophomore album Trespassing on May 15, Lambert is yet again poised to make a splash.

Check out the THR gallery to see Lambert's evolution in pictures from Idol Top 36 contestant to bona fide star.

Twitter: @Idol_Worship