Who is Big Sean ?

I know alot of people dont know who big Sean is but if you dnt kno he is B.O.M.B. Big Sean is basically kanye west's little brother (in a sense of kanye was Jay-z lil bro). He is originally from Detroit Michigan . Big sean used to work at the BAPE store and meet Kanye . Signed to Good music along with Common and Kid Cudi. Now is Realsing his new cd "Finally Famous"...with his hit "Getcha some" . Go check him out