Kim Kardashian was left feeling all-white at a glitzy event to promote her new perfume on Thursday night after she was pelted with a bag of flour.

The glamorous reality TV star was strutting her stuff on the red carpet at the charity launch of her fragrance, True Reflection, at the London Hotel in Los Angeles when one woman kicked up a right stink by lobbing the white powder at her perfectly made-up face.

Kim was left covered in dust and her security guards rushed her away from the manic powder-pelter.

The woman was detained by cops at the event and the local fire department was called to ensure the powder was not dangerous.

They left again when they determined it was just all-purpose flour.

However, Kim was a real pro, and after dusting herself down in a private room, she returned to the event as if nothing happened.

Twitter exploded with excitement as fans and critics discussed the incident, and Kim's protective sisters Khloe and Kourtney tweeted their own thoughts on the flour-bombing.

Kourtney wrote: "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!"

While Khloe added: "I wish I was with my sister tonight. I bet you that woman wouldn't have dared tried a thing..."