This photo was taken in 2009. Now you see dudes rocking cardigans on the regular (in my best Wu Tang voice) "like it's some kinda fashion show." I'm as guilty of this as the next guy.
Point being, always count on Andre 3000 to be 3000 steps ahead.
By the way, the white cardigan is part of Andre's Benjamin Bixby line which can be found at Barney's and Neiman Marcus. He can rap, too.