Kim Kardashian

Ryan Seacrest got fake ashes dumped on him. Kim Kardashian? She got pelted with powder.

An unidentified woman tossed a bag of white powder at the reality starlet Thursday at Hollywood's London Hotel, where Kardashian was doing interviews on the red carpet for the launch of her fragrance True Reflection. It was later determined the substance was cooking flour.

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According to the Los Angeles County Sheriff's Department, the woman who allegedly threw the bag was detained by hotel security and later released at the scene. Kardashian, who refused medical treatment, told deputies that she did not want to press charges and a non-criminal battery report was taken. It is unclear why the woman attacked Kardashian, but a video from E! shows the woman walking up to her and yelling what sounds like "lousy fur hag."

After heading to her hotel room to clean up, Kardashian returned to the event and laughed off the incident. "That probably is the craziest, unexpected, weird thing that ever happened to me," she told E! "Like I said to my makeup artist, I wanted more powder and that's a whole lot of translucent powder right there."

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Her sisters, however, were less than amused. "I wish I was with my sister tonight. I bet you that woman wouldn't have dared tried a thing..." Khloe Kardashian tweeted.

Kourtney Kardashian added: "Classy to flour bomb my sister at her charity event helping women. I wonder if they would have dared thrown the flour at my hormonal and pregnant self!"

Watch the flour-bombing below: