Compilation videos showcase her coldness towards fans, colleagues, and even other celebs.
Sharon Osbourne and others have publicly slammed him for his rudeness.
Her public feuds and online attacks, like those on Courtney Stodden, have garnered her a "diva" reputation.
A celebrity encounter gone wrong left someone feeling disrespected by her arrogance.
Despite her on-screen persona, stories emerged about her show's toxic environment.
Staffers have shared negative experiences, alleging a lack of kindness from the "Jenny From the Block" star.
Brilliant comedian, but not-so-nice guy? Reports suggest he can be condescending towards others.
From angry outbursts to ignoring fans seeking a photo, his behavior hasn't always been endearing.
Former Glee castmates, like Samantha Ware, accused her of creating a hostile work environment.
Concertgoers weren't impressed when she shamed a fan in a wheelchair for not standing during her show.