The 33-year-old reality star discussed a second pregnancy with Entertainment Tonight on Wednesday. Kim and Kanye are already parents to one-year-old North West, but would like to give their daughter a little brother or sister.
"I'm hoping so," Kim said of a second baby. "You know, I kind of wish I was pregnant at the same time Kourtney is. She's like more than half way in, so you know, we're trying."
Older sister Kourtney is pregnant with her third child with longtime boyfriend Scott Disick, while younger sister Khloe has no children. Kim believes it would be "fun" for all the sisters to be pregnant at the same time.
"There's a lot of craziness in the house, so why not add pregnancy hormones to the craziness?" she asked. "It would be like a partner in crime. Someone to know those cravings that you're really going through."
Kim considered adopting a child from Thailand earlier this year, but was dissuaded by her mother, Kris Jenner, and their hotel manager. She and Kanye certainly have room to house a growing family; the couple recently bought a $20 million estate in Hidden Hills, Calif.