Mariah Carey is the World's Biggest Diva

Mariah Carey made an American Idol appearance and it was hell to work with her! Everything had to be perfect, and shots had to be re-filmed if she didn't think the lighting was right.

According to Fox.com's Pop Tart column, lighting and camera technicians complained that Carey was a complete diva while taping the show. The crew claims to have been made to put more than normal effort into positioning lights and camera angles, only to be double checked my the star's personal staff.

"We had to reshoot one of the questions," one cameraman told the column. "I had to change the lighting and alter the position and do it again because we went off angle slightly. She has a director of photography with her at all times and can only be shot from the waist up."

Carey performed on the show's live taping, using a jewel-encrusted microphone and mic stand.

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