Sexy Women In Costumes Get Into Vicious Catfight At Halloween Party, Watch The Video

A group of angry partygoers turned Halloween into a fright fest… resulting in a wild brawl that prompted a police response.

TMZ got the clip – and it all appeared outside the restroom at the Unruly Agency/Memehouse Productions party at CBS Studios on Saturday night… where a pirate-dressed bash was caught shoving a blonde woman dressed as Buzz Lightyear, who turned around in shock and snapped, “Bro, what the fuck?”

Buzz's girlfriend, rocking a look inspired by Jessie from Toy Story, then moved forward, punching the pirate square in the face… only for the pirate to respond with some serious, adrenaline-filled shots.

Honestly, it was pure chaos and went on way too long – and it turns out security was there the whole time… finally stepping in to put an end to the fist fight.

Law enforcement sources tell TMZ … police received a call from security guards who were standing next to the victim, claiming she was attacked by three women.

The cops arrived at the party, but by then everyone had left… and the victim never pressed charges.