Kim Kardashian is covered in flour during arrivals at the "True Reflection" Fragrance Launch at the London West Hollywood. (Frazer Harrison/Getty Images)

Kardashian was celebrating the launch of her new perfume True Reflection at an event to benefit the charity Dress for Success.

As video from E! News shows, a woman walked up to Kardashian, yelled what sounded like “Lousy fur hag” and “flour bombed” the reality star. (The moment takes place at the 25 second mark in the video embedded below. Kardashian is pictured in the bottom left corner of the screen.)

Kardashian has been photographed wearing fur at public events many times, most recently at Kanye West’s Paris fashion show. In November, PETA placed a billboard in West Hollywood showing Kardashian in a fur vest next to a picture of live foxes with the words, “The babies miss their mother. Is she on your back?”

Kim Kardashian. (Frazer Harrison/Getty Images)

Kardashian’s sister Kourtney was clearly more upset when she responded to the incident on Twitter: “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!

The alleged powder thrower was detained by hotel security, according to the L.A. Times, but was later released after Kardashian declined to press charges. Kardashian dusted herself off and returned to the event.

Update: A rep for PETA told TMZ the organization was not involved in the flour attack: “We were given the video by an anti-fur activist on the scene.”

The rep continued, “PETA has tried everything from polite letters to public protests, but Kim Kardashian has not been moved by the news that animals are beaten, electrocuted, and even skinned alive for real fur garments. Whoever threw that flour may reach her when our polite appeals did not.”

TMZ also posted video of the incident that was shot from a better angle than E! News’ clip. Watch it below.