originally, a female opera singer. Then in the 80sMTV defined "diva" as a "woman singer who sings with emotion". Whitney Houston and Tina Turner were listed as divas. Now it basically refers to a music or movie star who is famous for her sexiness but has zero talent. She thinks the universe revolves around her and is surrounded by yesmen/yeswomen who roll out the red carpet and kiss her ass, telling her she's great. A self-centered rich bitch. There are a lot of spoiled talentless haughty divas around today.
Mariah Carey is constantly greeted by toadies and ass-kissers who tell her she looks nice every day and they roll out a red carpet before her. She's such a diva. Also, Britney Spears is out partying all the time this week while most of us have to work. What a diva!