Their costumes

Kourtney was dressed in a red sequined dress as a famous lounge singer named Assandra, known for shaking her ass while she sang, and who was Kim's role model.

Kendall was dressed as an elf, now the elf princess named Kendall Greenleaf, who believed she was on a quest to save her kingdom from evil and needed John's help.

Khloe was dressed as something...special. She was clad in a pink bikini, and now believed she was Kylie's older sister, a bikini model named Fantasy, who secretly flirted with John.

John woke his dolls up. Kylie and Kim forever and the other three only temporarily.