As the last pick for this article, we take a little dive into the music industry and highlight a feud between Nicki Minaj and Mariah Carey. During their days as judges for American Idol, these two divas found it hard to get along with each other. After their public display of hatred towards one another, blame was sorely placed on the producers for thinking they could make it work for two megastars with overblown egos. During a radio interview years later, Mariah described working with Nikki as hell, with Nikki allegedly calling her a b**** every chance she got.