Musician Jennifer Lopez arrives at the 2014 Billboard Music Awards in Las Vegas, Nevada May 18, 2014.[Photo/Agencies]

No. 6: Jennifer Lopez

Reason: Narcissist.

For those who dislike Lopez, there is only one reason – how can she love herself so much? Jennifer Lopez travels on a private jet to attend filming sessions of American Idol. She thinks she deserves an Oscar for best actress for a film that failed at the box office (not to say that ticket sales and quality are always a positive correlation). Compared to Lopez, Mariah Carey (who is also known for her narcissims) doesn't even come to par.

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