During rehearsals for his outlandish American Music Awards performance, amid a thundercloud of throbbing theater lights and special-effects fog, Adam Lambert effortlessly governs the sprawling stage while gripping a microphone in his gloved hands and donning a tight T-shirt slathered with an image of David Bowie's face.
 
It was just seven months ago that the seemingly unstoppable 27-year-old glam rocker lost "American Idol" to nonchalant singer-songwriter Kris Allen on this very stage at the Nokia Theatre, but now it's Lambert's world — and we're just being entertained by it.