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ET can confirm that the L.A. Sherriff's Department responded to an incident earlier tonight in West Hollywood after an unidentified woman poured a bag of white powder all over Kim Kardashian.

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The confrontation occurred early Thursday night while the reality superstar was promoting her new fragrance, True Reflection.

"That probably is the craziest, unexpected, weird thing that ever happened to me," said Kim to E! News shortly after the incident.

Kim declined to press charges against the mystery woman who was restrained and subsequently released by hotel security. The white powder was deemed to be nothing more than cooking flour.

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A similar incident occurred in New York City last December to Kim's friend and recurring guest on Kourtney & Kim Take New York, Jonathan Cheban, when he was flour-bombed by an apparent fan of her ex-husband, Kris Humphries.