Today is the anniversary of Kanye West's "Christian Dior Denim Flow," a epic posse cut featuring Pusha T, Kid Cudi, John Legend, Lloyd Banks, and Ryan Leslie. Complex's Noah Callahan-Bever looks back on what led to that song. Is "Christian Dior Denim Flow" the greatest rap song that's not on streaming? #kanye #ye #goodfridays #christiandior #rap #hiphop