retro retro Pepsi Kim Kardashian and her sister Khloe rocked their best disco duds at the Pepsi Throwback Launch Party at World on Wheels in LA Wednesday night.

The gorgeous gals were hanging with pal Kelly Osbourne, who if you think about it, would make a pretty good Kardashian sister herself. She knows what it's like to have cameras follow you around 24/7, she loves to party and her name even starts with a 'K' !!!