From Barry Manilow to Queen to Prince, American Idol has had its fair share of musical legends grace its stages. And as America’s most popular show begins its sixth season, that trend doesn’t seem to be ending anytime soon. Diva supreme Diana Ross confirmed on the Late Show With David Letterman that she’ll be making an appearance on the Fox smash hit, where the 62-year-old will mentor the young finalists. No date has been announced for Ross’ guest spot on Idol, so stay tuned!

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