"Idol" Loser Sticks Up for Brit

Britney Spears has at least one fan ... other than cryin' Chris Crocker.

TMZ caught retoothed "American Idol" wannabeen Elliot Yamin leaving the Ivy yesterday afternoon, where he told our photog he though Brit's "performance" was "awesome ... I give it a thumbs up!"

Was he watching the same show?!