Michelle & Natalie's Throw-Down!

Natalie Portman and Michelle Williams get downright ugly with each other in a new clip hitting the Internet – wrestling, grabbing, hair-pulling and head-banging – and all over a bottle of perfume.

Don't place your bets yet on the winner, however, as the clip is a short film by director Roman Polanski featuring a fake perfume called "Greed." The short, which is part of a project by Francesco Vezzoli and debuted at the Gagosian Gallery in Rome, was designed to parody the hype surrounding luxury products as they're marketed to the public.