Lisa O’Connor / Startraks

More than 2,000 guests showed up Tara Electra 's 6th annual Unruly Halloween party over the weekend ... and TMZ has the pics.

The invite-only event drew stars like Chance The Rapper , Machine Gun Kelly , Mario , Tana Mongeau and Amber Rose to CBS Studios in West Hollywood to party and mingle on one of the iconic studio's soundstages. Gallery Launch Gallery Lisa O’Connor / Startraks

Tara teamed up with Nick Santiago , Benny Blanco , and Matt Hwang 's Pizza Slime and MemeHouse Productions to throw one insane bash. Lisa O’Connor / Startraks

Surrounded by a fully immersive zombie-filled set design, partygoers sipped cocktails and danced long into the night while noshing on lobster tails and caviar. Lisa O’Connor / Startra

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