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.

PHOTOS: Kim's sexiest white dresses

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.)

PHOTOS: The Kardashians take Miami

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!"

PHOTOS: Why Kim and Kanye are the perfect match

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?

This article originally appeared on Kim Kardashian, Kanye West Dress as Catwoman, Batman for Halloween!