She went on to add, "Chicago just looks really long to me and doesn't flow, so I call her Chi".
The couple was going to initially name her Jo, in honor of Kim's grandmother, Mary Jo, "MJ" or Rei, in honor of Kanye's father, Ray West but then the reality star said that her baby girl does not look like either of the names.
Kardashian, 37, shared a snap of two-year-old Saint sitting with his baby sister Chicago - or Chi. Kanye West, North, and Saint will appear together in September's issue of Harper's Bazaar for their ICONS edition. A one syllable name.
On Sunday, the family's reality TV series returned to United States television and saw Kardashian West involved in a furious row with her sister Kourtney, 39. Last month, Kim Instagrammed an adorable picture of Chicago and captioned the pic "Chi Noel", leading fans to naturally assume that Noel is Chicago's middle name. In the photo, Kim Kardashian is laying on a bed with a blank look on her face. That's it, she can decide later if she wants to be called Chicago or Chi. Like I love the name Noel. "When you're told not to be dramatic, " remarked one sarcastic follower, while another wrote, "this reminds me of a chalk outline from GTA".
The brunette beauty can also see a lot of herself in Chicago but has admitted she was initially anxious that they wouldn't bond because she was born via surrogate.
Despite never having launched a Facebook fundraiser before, Kim said it was clear "children's mental health and the work of the Child Mind Institute means a lot to me".
She also said that she planned to give the little'un a more traditional middle name. "I'm so grateful and I've been with you for five years, '" Kardashian West went on to explain of Shepard's response.