Kanye West and Kim Kardashian West announced earlier this week that they’d welcomed their third child, a girl born on January 15 via surrogate. Now, the couple have announced the child's name. And it is... Chicago West, Kim revealed on her site today. The younger sister of North (age 4) and Saint (age 2) is named after Kanye's hometown, of course. Celebrate by watching the video for "Homecoming," Kanye's Chicago anthem featuring Coldplay's Chris Martin from his 2007 album Graduation, below.