Groovy Stars Show Up to 70’s Themed Casamigos Halloween Party

Sonny and Cher, Sandy from “Grease,” disco babes and more hit up the star-studded Casamigos Halloween party Friday night.

The annual bash was 70’s themed and the stars went all out.

Kim Kardashian absolutely nailed her retro look, rocking an outfit inspired by Cher‘s iconic 1973 Academy Awards look.  BFF Jonathan Cheban subbed in for Kanye and dressed as the Sonny Bono to Kim’s Cher.

Casamigos tequila co-founder Randy Gerber (who sold the company with George Clooney earlier this year) was in attendance along with wife Cindy Crawford and BFF Amal Clooney.

Courtney Love even showed up as … herself.

Check out all the funky party shots above!