Kim K Ass War With Blac Chyna

9/24/2013 4:30 PM PDT

Kim Kardashian -- Ass War with Blac Chyna

Butt legends Kim Kardashian and Blac Chyna unleashed their A-bombs on an unsuspecting public this afternoon ... potentially scarring millions.

Kim was dressed like a fighter pilot -- armed with massive cleavage -- and convened with Nicki Minaj BC for a derriere summit (lunch date) of the Asses Powers.

We're told Kim's sister Kourtney and Scott Disick were also present for the talks.

We're guessing everything twerked out in the end, but we still gotta ask ...