Mariah Carey 'Watch What Happens Live' Diva Demands: 'Elusive Chanteuse' Behavior Revealed In Andy Cohen's Book

When it comes to diva behavior, Andy Cohen knows a thing or two about how to appeal to some A-list celebrities. The Watch What Happens Live host has gotten some pretty big singers to appear on his show, including Lady Gaga, Cher and Jennifer Lopez, but it seems like out of all the guests, Mariah Carey might have been the most difficult to work with. The star opens up about her antics in his new book The Andy Cohen Diaries: A Deep Look at a Shallow Year.

According to Radar Online, the talk show host and author writes that he was so excited when he learned from Mariah's publicist that he would have the opportunity to get her on his show last December.

"Would that not be a great way to end the year? Am I not the luckiest person?" Andy writes in his book.

But the host brings up the fact that when booking celebrities that most of the time they supply a "Do Not Mention" list, featuring things the host can't talk about on air. He alludes to the fact that Mariah's list "boils down to not discussing any other lady singer."

Watch Mariah Carey throw some shade at Eminem during her appearance in the now-legendary clip below:

Some of the things Mariah did when she agreed to tape the episode was that she not only showed up to set two hours late, but she also made Andy switch seats with her so she could be filmed from her "better side."

"Mariah's people pushed the taping a half an hour three or four times," he writes. "She finally was in the chair around 8 pm. (The audience had to have been extra-hammered.)"

But despite all the diva antics, it seems Cohen had a good time with the "Touch My Body" singer.

"She is clearly a handful but she know her sh*t and I enjoyed her," Andy explained, saying, "I want her to come back."