This week, American Idol contestant Haley Reinhart sang an unreleased Lady Gaga track "You and I," with Gaga's seal of approval. And now, Haley and the rest of the Idols will come face to face with Lady Gaga when she is next week's celebrity mentor.
"I only have one word for our mentor on @AmericanIdol next week.......... Gaga." Ryan Seacrest Tweeted.
Photo: Cliff Lipson/CBS