"American Idol" judges said they weren't fooled when former judge Steven Tyler took the stage in drag during this week's auditions for talent show in Oklahoma.

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The veteran Aerosmith singer drew some howls from the judges, who recognized the 64-year-old rocker when he was introduced as a typical "Idol" hopeful named Pepper LaBieja.

"Steven Tyler is in the house," cheered Randy Jackson.

Mariah Carey quipped, "Dude looks like a lady," a reference to the Aerosmith hit by the same name.

CNN said Keith Urban recognized the prank immediately while Jackson, Carey and Nicki Minaj seemed to need a few moments to catch on.

The Oklahoma auditions were the final round of tryouts before the selection process moves to Hollywood, the New York Daily News said.