Lady Gaga to mentor 'American Idol' Top 4 contestants

Expect a surge in the Top 4′s performance level next week: Fox has confirmed to EW that Lady Gaga is set to appear on American Idol as a mentor for our remaining finalists. And before you scoff at the idea of a 25-year-old handing out career advice, remember that Miley Cyrus served as a mentor on the show last year, at the ripe age of 17 years old. And it’s not like Gaga doesn’t have anything to offer — some of our contestants (ahem, Lauren!) still have plenty to learn when it comes to truly performing to a crowd.