Kim Kardashian, Kanye West, Jonathan Cheban, Kourtney Kardashian and Scott Disick arrive at Kim Kardashian's Halloween party at LIV nightclub at Fontainebleau Miami on October 31, 2012 in Miami Beach, Florida. Credit: Alexander Tamargo/Getty Images

Catwoman and Batgirl take Miami!

For her Halloween bash at Miami hotspot Liv Oct. 31, Kim Kardashian and sister Kourtney -- along with Kanye West, Jonathan Cheban and Scott Disick -- dressed up as Gotham City's finest heroes and most notorious villains.

Kim, 32, donned a sexy, leather catsuit, while her older sis, 33, dressed up as Batgirl. Meanwhile, West channeled Bruce Wayne's alter-ego, Batman, a red-headed Cheban donned The Riddler's green suit, and Disick played Batman's faithful sidekick, Robin. (Kim and Kourtney's little sis, Khloe, was across the country attending to her new X Factor hosting duties.)

Prior to pulling up to Liv, Kim dropped a mini-hint to her 16.5 million Twitter followers about her costume choice.

"The whole crew has a theme," she wrote Wednesday evening. "Even cars to go with our theme!"

Cheben teased his costume on Twitter earlier this week, asking his followers to guess his outfit for Halloween festivities.

"Riddle me this . . . " he wrote underneath a close-up Instagram image of green, question-mark printed fabric.

Tell Us: What do you think of the Kardashian krew's Batman-themed costumes?