The Keeping Up with the Kardashians star is ready to go with three separate characters – Disney characters Princess Jasmine (from Aladdin) and Snow White, as well as a pirate – she told Johnjay and Rich of Phoenix radio station KISS-FM on Friday.
"They're all pretty sexy and fun," she said.
Kim's sister Khloe, who also called in, said she wants to go as Catwoman, but is having trouble finding a Batman to fit her 6 ft., 10 inch husband, NBA player Lamar Odom. She ordered a costume online, she said, but it was too small.
Upon hearing that, Kim opened up a can of worms by asking to borrow the too-small Batman outfit for her boyfriend, NFL star Reggie Bush. "I bought the costume last year for Catwoman, I just need the guy's Batman," she pleaded.
"You're such a copycat," Khloe shot back, as the pair started bickering on the air.
"Why can't [Reggie] be Aladdin, or why can't he be Johnny Depp as a pirate? How hot is Johnny Depp?" said Khloe.
Eventually, Kim said wearily: "I'll figure it out without you, don't even worry."
For good measure, Khloe warned: "If she takes the Batman costume, there's going to be war."
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