Sources close to the show tell TMZ that when Mariah was on the show as a guest mentor for Season 7 in 2008, she was “not very nice at all.” In fact, the source goes so far as to call her a “nightmare to work with.”
The main complaints? Mariah was very nitpicky about frivolous details and showed up to filming late. Now-former judge Jennifer Lopez was reportedly a dream to work with for those involved by comparison, a “night and day” difference from Mariah.
Hopefully she’s changed her supposed diva ways since then! As far as we’re concerned, Mariah will make a fantastic judge, and we’ve got five ways to prove it!