Another celebrity baby name enters the history books, and let's just say this one is directional. Kim Kardashian and Kanye West have named their baby girl North West, as in the compass direction, claims TMZ, which reports that's what is listed on the birth certificate. A source tells Us Magazine it's true, and adds there's no middle name. The source tells the mag, "They will call her Nori for short." No word yet on how the Kardashian women (Kourtney, Khloe, Kylie, Kendall, Kris) feel about the break in the K-letter tradition. Kim and baby finally left the hospital overnight, Radar reports; click to find out where they have to live. (More Kim Kardashian stories.)