The 31-year-old star was on the red carpet at The London Hotel in West Hollywood when the incident happened, and pregnant sister Kourtney has suggested they would not have done the same to her.
She wrote 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! (sic)"
Despite Kourtney's claims it was a "charity event", their mother Kris Jenner - who was also at the event - revealed it was actually to promote her new fragrance.
Craziest thing ever
Before the flour bombing, she wrote: "So excited for @KimKardashian True Reflection fragrance launch tonite!! Congrats Kimmy I'm so proud of you!! AND you smell amazing LOL!!! (sic)"
Kim was ushered into a room where she removed her flour covered jacket and the assailant - a woman - was arrested.
Speaking afterwards, Kim said: "That probably is the craziest, unexpected, weird thing that ever happened to me.
"Like I said to my make-up artist, I wanted more powder and that's a whole lot of translucent powder right there!"
24.com publishes all comments posted on articles provided that they adhere to our Comments Policy. Should you wish to report a comment for editorial review, please do so by clicking the 'Report Comment' button to the right of each comment.
Kanye West broke down in tears during a radio interview broadcast in which he spoke about his late friend and fashion teacher, Louise Wilson. Read More »
R1.7m custom dress worn by Lupita Nyong'o at Oscars was reported stolen. Read More »
HousesR 1 630 000
HousesR 9 500 000
HousesR 1 700 000