Reportedly, Kim Kardashian left the Vienna Ball after a white man working at the event approached her in black face. He pretended to be Kanye West.

Richard Lugner, an Austrian businessman paid $500,000 to the "Keeping Up With The Kardashians" star to be his date at the Vienna Annual Opera Ball.

"Kim is annoying me," said Richard in an interview.

However, sources informed TMZ that she was busy taking photographs with Richard when a guy who was working at the event came up to her like he was Kanye West.

She walked away from this guy, yet she had to stay at the ball for another hour and a half.

Later, a guy came up to the star and asked her to dance with him. She politely declined the offer stating she wasn't a good dancer. The guy replied that he would dance with her if the band played "N****rs in Vienna."

Kim also faced other problems. She revealed that Richard was aggressive and even grabbed her. He also insisted her to lose her security. Kim told her people that Richard was trying to be alone with her.

According to TMZ, all these incidents were caught on tape for Kim's reality show.

At the Vienna Opera Ball, Kim flaunted her curves in an unusual tow-toned gown. She looked gorgeous in a satin cream-coloured skirt with a black top. Kris Jenner was also spotted at the event, and she donned a black sequined gown. Before the event, Kim and Kris posed with Richard at press conference for the ball.

"I heard it's just an extraordinary event, that it's extremely beautiful, and I'm just honored that I was invited to come here," told Kim to the reporters.

Richard Lugner, who is known to rent a date, previously, attended the Vienna Opera Ball with Carmen Electra, Hillary Swank, Paris Hilton, Nicollette Sheridan and Pamela Anderson.